Moving on from the success of the Lycra 5 and the MSF500tb , this flex version has all of its predecessor’s qualities and more.

The MSF500tb flex, offers the wearer a substantial amount of built-in insulation. Consequently the need to wear a traditional type under suit is not necessary. This is why this suit is so versatile and is the key to its popularity.

From late spring to mid autumn the MSF500tb flex can be worn over a t-shirt and a pair of shorts. As the temperature falls or on deeper dives, which might include chilling decompression stops, quality base layers, such as O’Three’s PBB+ can be added for extra warmth and comfort.

Maximum Versitility

100

Percent


The suit’s versatility is the key to it’s sucess

Complete and ready to dive from £875

Material

The MSF Material

We continue to make full use of the combination of quality 5mm dive grade neoprene and the externally laminated ‘multi stretch fibre’.

Quality 5mm dive grade neoprene producing a substantial amount of insulation.

The Flex Panels

The 2.5mm flex panelling which runs from the waist up into the bicep and the entire fore arm means movement and flexibility has been increased.

The MSF500tb -

Specification

  • Material: 5mm Multi Stretch Fibre lined quality pressure resistant neoprene.
  • Neck: 2.5mm Micro-Mesh, comfortable super-stretch
  • Valves & Hose: Apeks low profile Auto Dump,
    Swivel Inlet & hose.
  • Zip: Heavy Duty BDM riveted dry zip. Medium duty on Ladies for added flexbility.
  • Zip Guard: Additional protection to that all important zip
  • Graphics: Anti-abrasion PU
  • Wrists: Long and contour hugging Xstend stretch wrist seals.
  • Pocket: Cargo25 with built-in slate pocket and D-rings
  • Seams: Bonded, chemically cured and internally reinforced with nylon backed neoprene cover tape
  • HD Boot: Super warm contoured foot. Strengthened sole combining an ergonomically reinforced upper and
    heel, with a built in fin stop.
Complete & ready to dive from £875
Your suit comes complete with the following

  • Quality suit bag
  • Changing Mat
  • Vented Semi-dry hood

  • Jollop wrist seal lube
  • Bees Wax
  • Zip Slip

PBB Base Layer Temperature Guide

PLEASE NOTE: Ultimately, it is you the wearer of the dry suit that is generating the heat, the suit you choose to wear (as long as it is a neoprene suit) is simply the insulator. A membrane style of suit will offer virtually no thermal protection.

The thermal guidance information above is purely that, a guide.  If you are a petite lady and feels the cold when snuggled up in bed with a winter duvet on all year round, or you are a guy that wears a T-Shirt in the depths of winter your reliance on a neoprene dry suit from a thermal perspective is at either end of the scale.

Remember, if your base layer / under suit combination is coming up short at certain times of the year, just add flexible layers using the correct fabrics to improve your resistance to the cold. Think climbers and skiers. Get it wrong and you will increase bulk and buoyancy.

Please be sensible realistic and careful when choosing the appropriate thermal protection. We are all different.

Your life could depend on it.

ENQUIRE or ORDER
an O'Three ``Off the peg - Made to fit`` Drysuit here...

To help O’Three ascertain whether
you are an “Off the Peg – Made to Fit” size
and the type of adjustments that might be required,
please fill in our quick online measurement form.

Go to Quick Measurement Form

Customising your MSF500tb

These options are available at additional cost.

cargo-25 pocket

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Cargo 25

  • Dimensions 22cm x 16cm x 7cm (Approx 2.5L)
  • HD Velcro Closure
  • Compact when empty
  • Hidden Slate Pocket
  • 2x D-Rings
  • Self Draining
Cargo 30

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Cargo 30

  • Dimensions – 24cm x 18cm x 7cm (Approx 3L)
  • HD Velcro Closure
  • Compact when Empty
  • Hidden slate pocket
  • 2x D-Rings
  • Self Draining
zipped pocket

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Zipped

  • Dimensions – 28cm x 18cm x 6cm (Approx 3L)
  • 32cm Double opening Zip
  • Compact when Empty
  • Hidden slate pocket
  • 2x D-Rings
  • Self Draining
Slate Pocket

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Slate

  • Dimensions – 24cm x 18cm x 2cm
  • HD Velcro Closure
  • Low Profile
  • D-Ring
  • Self Draining
HD Boot

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HD Boot

  • Super warm contoured foot.
  • Strengthened sole combining an ergonomically reinforced upper and heel.
  • Built in fin stop.
Pivot Boot

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Pivot Boot

  • A 3.5mm high density boot.
  • Contoured foot and reinforced sole.
  • Ergonomically shaped with strap down ankles.
  • Built in fin stop.
Soft Sock

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Soft Sock

2.5mm Ri material. A soft sock option may be a solution for some, but please be aware; this system can create other issues.

If you would prefer this option on your off the peg suit, it will add an additional £75.00.

The OTB Abyss rock boot will accompany this soft sock perfectly.

Please call for more details – +44 (01305) 822820

Apeks Sea Tec

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Low Profile Swivel Suit Inflation Unit and Hose

Apeks robust and totally reliable inflation valve features an extra large recessed push-button allowing easy operation.

The smooth back plate gives protection from uncomfortable pressure loads and helps prevent cold air blasts through underclothing.

The valve sits low on the chest making it less prone to snagging.

The 360° rotation is a key feature of this valve to meet your personal hose configuration.

Comes complete with a 29″ (74cm) long medium pressure hose, with the more universal Seatec coupling.

Apeks Valve

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Low Profile Automatic Dump Valve

The most technically advanced and reliable automatic dump valve available.

Correctly adjusted, the valve gives effortless yet controlled hands free ascent as expanding air automatically vents from your dry suit.

Equipped with a manual over-ride system allowing you to vent the suit completely without disturbing your personal buoyancy setting.

This valve has the lowest profile with optimum dump rate.

It has an improved ratchet feel and is ergonomically designed for ease of use

Dump Valve

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Original Automatic Dump Valve

Functions in exactly the same way as the Low Profile version.

For Re-breather users, with front mounted counter lungs, this valve will be easier to reach.

This valve can be supplied with a higher break pressure approximately twice that of the original, this higher break valve adds an additional £15.45

Carbon Braided Hose

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Carbon Braided Hose

This high end hose features an external nylon safety braiding designed to resist the snags and abrasions that divers can often encounter.

The double braiding also resists UV rays out of the water, thus extending the lifespan of the hose.

Can be supplied with either Seatec or std Apeks coupling.

This hose comes as standard on the ccn range, for other suits, please add £25.00

Allowing you to answer the call of nature without having to remove your suit above and below the water.

Female friendly when used in conjunction with the ‘SheWee Go’

pdf-icon-sm
Download Advanced P-valve brochure

Advanced P-Valve

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Allowing you to answer the call of nature without having to remove your suit above and below the water.

Sorry…, men only.

P-Valve

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A 25cm Medium Weight BDM dry zip, laminated into a separate panel, then glued, blind stitched and sealed.

Allows you to answer the call of nature on the surface without having to remove your suit.

Sorry men only.

Click for a larger image

This reflective moulding is unique to O’Three and is SOLAS approved.

Size: 11cm x 7cm.

Additional reflective panals can be added to any of our suits at extra cost.

Solas Reflective

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Kubi O'Three

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Kubi O'Three

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Kubi O'Three

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Kubi O'Three

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Kubi O'Three

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Kubi O'Three

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We have been working with manufacturers of Dry Glove systems and particularly Kubi so that they work perfectly with our neoprene wrist seals.

Due to various dry glove systems available and ways of fitting them to our suits please contact one of the team discuss the options –
+44 (0)1305 822820.

As with a front entry dry suit a hood attached system will tick some boxes, but will create one or two negatives.

Increased warmth and reduced flushing are the real benefits, however equalisation and neck seal setting is made harder.

Removal of the hood is obviously not an option when the weather improves.

There are several options available and you may have a preference, please call and we will be very happy to discuss those options in more detail –
+44 (0) 1305 822820

Made To MeasureAlthough made to measure is the ultimate way to have a suit made, at certain times of the year long lead times have to be considered. If you need a quicker completion, please consider the “off the peg – made to fit” options that are available on all O’Three suits.

The three key stages to O’Three’s customisation Made to Measure process. There are many factors that need to be considered when purchasing a made to measure dry suit. However, certain build parameters must always be adhered to.

Types of diving and individuals perception of just how a suit should fit can vary hugely. O’Three will always guide and advise on how we feel a suit should be tailored and customised, but ultimately, it is down to each person.

To ensure this 100% customisation is achieved, we always insist, where possible a fitting is done before your suit is complete. It is at this stage any adjustments that need to be made to the fit of your suit can simply and easily be done with no compromise to the integrity of any seam. Exact position of all components, valves, pockets etc are then discussed and marked onto your suit.

This might seem like a long winded way but it works. We feel this is the only way you can truly achieve a genuinely customised suit.

Stage 1: Choose Your Suit.

Either online, over the phone or in the shop. Get measured, decide on materials, seal combinations and colour ways at this first step.

If you choose to do any of the above remotely O’Three will always be pleased to guide you through this process. It’s not really that difficult as long as you remember some basic points as detailed in the measurement form section of this website. Please call if not 100% sure

Stage 2: The Fitting

This is the most important and critical stage of production. We know it’s a big ask, but it is at this stage, where every effort must be made to try and come down to our workshops here in beautiful Portland, Dorset, UK. We call this “a fitting”. This fitting date is given when you place your order.

Stage 3: Completion

After stage two, you will be given a completion date for collection or despatch of your new suit. Normally two working weeks after your fitting.


As well as the full specification above, the cost of your suit includes many customising options, some of which are listed below.

A choice of:

  • Material Combinations
  • Customised Tailoring
  • Knee Pads
  • Shoulder Pads
  • Valve Options
  • Hose Options
  • Two Pockets
  • Reflective’s
  • Braces (if required)
  • Boot / Soft Sock
  • Zip Weight
  • Zip Guard
  • Seals

Other options are available at additional cost.

  • P-Zip
  • P-Valve
  • High Profile Auto, break pressure x2
  • Commercial reinforcements
  • Additional valves
  • Extra Pockets
  • Hood Attached
  • Dry Glove Systems
  • Rock Boots

“Off the Peg - Made to Fit” Service

Taking into account our “Off the Peg – Made to Fit” service, our standard size chart should be used as a guide.

Although “Off the Peg”, O’Three will ensure that a good fit is achieved. Our extensive size range and the large amount of adjustments that can be made, for example, tweaks to the seals, arms and legs that might need shortening, or a change in boot size, means that we can correctly fit many shapes and sizes into “off the peg” suits…., we have been doing this for many years and we have called this process, “Off the Peg – Made to Fit”.

The MSF500tb Flex used in conjunction with O’Three’s PBB base layer makes it possible for O’Three to produce a suit that will fit you well throughout the entire year.

Seal alterations are free of charge.

To help O’Three ascertain whether you are an “Off the Peg – Made to Fit” size and the type of adjustments that might be required, please fill in our quick online measurement form.

Size Guide

Mens Sizes

MensHeightWeightChestWaistHipInside LegBoots
Small5’5" - 5’7"
165 - 170cm
9.5 - 10.5stn
60 - 70kg
36" - 38"
92 - 97cm
29" - 31"
74 - 79cm
34" - 36"
86 - 91cm
27"
69cm
7 - 8
40 - 42
Medium5’7" - 5’9"
170 - 175cm
10.5 - 11.5stn
67 - 73kg
38" - 40"
97 - 101cm
31" - 33"
79 - 84cm
36" - 38"
91 - 97cm
28"
71cm
8-9
42 - 43
Medium Tall5’9 - 5"11’
175 - 180cm
11.5 - 12stn
73 - 80 kg
38" - 40"
97 - 101cm
31" - 33"
79 - 84cm
36" - 38"
91 - 97cm
29"
74cm
8-9
42 - 43
Medium Large Short5’7" - 5’9"
170 - 175cm
11.5 - 13stn
73 - 83kg
40" 42"
101 - 107cm
33" - 35"
84 - 89cm
38" - 40"
97 - 101cm
28"
71cm
8-9
42 - 43
Medium Large5’9 - 5"11’
175 - 180cm
12 - 13.5stn
67 - 73kg
40" 42"
101 - 107cm
33" - 35"
84 - 89cm
38" - 40"
97 - 101cm
29"
74cm
8-9
42 - 43
Medium Large Tall5’11" - 6’1"
180 - 186cm
12.5 - 14stn
80 - 90kg
40" - 42"
101 - 107cm
33" - 35"
84 - 89cm
38" - 40"
97 - 101cm
30"
76cm
9 - 10
43 - 44
Large Short5’9 - 5"11’
175 - 180cm
12.5 - 14stn
80 - 90kg
42" - 44"
107 - 112cm
35" - 37"
89-94cm
40" - 42"
101 - 107cm
29"
74cm
9 - 10
43 - 44
Large5’11" - 6’1"
180 - 186cm
13.5 - 15stn
86 - 95kg
42" - 44"
107 - 112cm
35" - 37"
89-94cm
40" - 42"
101 - 107cm
30"
76cm
9 - 10
43 - 44
Large Tall6’1" - 6’3"
185 - 190cm
13.5 - 15.5stn
86 - 98kg
42" - 44"
107 - 112cm
35" - 37"
89-94cm
40" - 42"
101 - 107cm
32"
81cm
10 - 11
44 - 45
Extra Large Short5’11" - 6’1"
180 - 186cm
13.5 - 15stn
86 - 95kg
44" - 46"
112 - 117cm
37" - 39"
94-99cm
42" - 44"
107 - 112cm
30"
76cm
9 - 10
43 - 44
Extra Large6’1" - 6’3"
185 - 190cm
14.5 - 16stn
95 - 106kg
44" - 46"
112 - 117cm
37" - 39"
94-99cm
42" - 44"
107 - 112cm
32"
81cm
10 - 11
44 - 45
Extra Large Tall6’3" - 6’5"
190 - 195cm
15.5 - 17.5stn
98 - 108kg
44" - 46"
112 - 117cm
37" - 39"
94-99cm
42" - 44"
107 - 112cm
33"
84cm
11 - 12
45 - 46
Extra Extra Large6’3" - 6’5"
190 - 195cm
16.5 - 19stn
105 - 121kg
46" - 48"
117 - 122cm
39" - 41"
99-104cm
44" - 46"
112 - 117cm
33"
84cm
11 - 12
45 - 46
Extra Extra Extra Large6’5" - 6’7"
195 - 201cm
18.5 - 21.5stn
117 - 137kg
48" - 51"
122 - 130cm
41" - 44"
104-112cm
46" - 49"
117 - 125cm
34"
86cm
11 - 12
45 - 46

Womens Sizes

WomensHeightWeightBustWaistHipInside LegBoots
[UK Male]
Extra Small5’2" - 5’4"
157 - 162cm
7.5 - 9stn
48 - 57kg
33" - 34"
84 - 89cm
25" - 27"
64 -69cm
36" - 38"
91 - 97cm
26"
66cm
5 - 6
37.5 - 38.5
Small5’4" - 5’6"
162 - 167cm
9.0 - 10.5stn
57 - 67kg
34" - 36"
89 - 91cm
27" - 28"
69 - 71cm
38" - 40"
97 - 101cm
27"
69cm
6 - 7
38.5 - 40
Medium5’6" - 5’8"
167 - 17cm
10.5 - 12stn
67 - 76kg
36" - 38"
91 - 96cm
28" - 30"
71 - 76cm
40" - 42"
101 - 107cm
28"
71cm
6 - 7
38.5 - 40
Medium Large5’8 - 5’10"
172 - 178cm
12 - 13.5stn
67 - 73kg
38" 40"
96 - 102cm
30" - 32"
76 - 81cm
42" - 44"
07 - 112cm
29"
74cm
7 - 8
40 - 42
Large5’10" - 6’0"
178 - 183cm
13.5 - 15stn
86 - 95kg
40" - 42"
101 - 107cm
32" - 35"
81 - 89cm
44" - 46"
112 - 117cm
30"
76cm
7 - 8
40 - 42
Extra Large Short5’10" - 6’0"
178 - 183cm
15 - 16stn
95 - 102kg
42" - 44"
107 - 112cm
35" - 38"
89-96cm
46" - 48"
117 - 122cm
30"
76cm
7 - 8
40 - 42