90ninety trilaminate diving suit
MF5 Drysuit back
MF5 Drysuit full length back
MF5 drysuit side profile right
MF5 drysuit side profile left
MF5 YKK zip
MF5 with apeks
cargo 25 pocket
O'Three MF5 back graphics
neoprene drysuit
MF5 Drysuit back
Drysuits

90Ninety DT

£2,265.00

The drysuit that established O’Three’s reputation

size guide

Size guide

Included with your drysuit:

  • Quality suit bag
  • Changing mat
  • Vented semi-dry hood
  • Jollop wrist seal lube
  • Bees wax
  • Zip slip

Please be assured, we will not ship a drysuit without contacting you first to confirm sizing and recommend adjustments that might be required prior to dispatch

For four decades, O’Three has built its reputation on one thing: a properly tailored 5mm neoprene drysuit, worn with the correct undersuit. Trusted by divers worldwide, the MF5 has become synonymous with strength and reliability.

The new MF5 honours that legacy while moving it forward, delivering enhanced insulation, comfort, flexibility and durability. True to our heritage and engineered for today’s diver, it’s built to perform for years to come.

Spec & Features

  • 5mm Multi Stretch Fibre lined quality pressure resistant neoprene
  • Apeks Low profile Auto Dump, Swivel Inlet & hose
  • Additional protection to that all important zip
  • Long and contour hugging Xstend stretch wrist seals
  • Bonded, chemically cured and internally reinforced with nylon backed neoprene cover tape
  • 2.5mm Micro-Mesh, comfortable super-stretch
  • Heavy Duty BDM riveted dry zip
  • Anti-abrasion graphics
  • Cargo25 with built-in slate pocket and D-rings
  • Super warm contoured foot. Strengthened sole combining an ergonomically reinforced upper and heel, with a built in fin stop.
Product details
  • SKU:
  • 5mm dive grade neoprene producing a substantial amount of insulation
  • 2.5mm flex panelling which runs from the waist up into the bicep and the entire fore arm means increased movement and flexibility
Materials & Care

After every dive

  • Rinse thoroughly with fresh water. This helps remove salt and contaminants that can damage components over time.
  • Pay particular attention to the valves and zip. We recommend regular freshwater rinsing for valves to keep them working reliably.
  • Check the suit for damage. Look for cuts, punctures, seam damage and signs of wear around high-stress areas.
  • Allow the suit to dry properly before storing it away.

Oil, diesel and contaminated water can significantly reduce a drysuit’s lifespan.

Shipping & Returns

England, Wales & Mainland Scotland

  • Dry suit Delivery – £15.00. This is for any of our dry suits. It is next day delivery from the date of despatch and it is insured.
  • Express Delivery – £8.00. This is for all wetsuits, PBB’s, HUV, boots and P-valves. It is next working day delivery from the date of despatch and it is insured.
  • Royal Mail – £3.95. This is for Gloves, Jollop, and hoods, sheaths and spare parts. It is 1-2 day delivery from the date of despatch.

For all Saturday morning deliveries this has to be sent with a courier and is expensive – £35.00

Ireland, Scottish Isles, Channel Isles, Scilly Isles and isle of Man

  • Delivery – £25.00. This is for all our dry suits, wetsuits, PBB’s, HUV, boots and P-valves. It is 2-3 day delivery from the date of despatch and it is insured.
  • Royal Mail – £6.95. This is for Gloves, Jollop, and hoods, sheaths and spare parts. It is 2-3 day delivery from the date of despatch.

Unfortunately there is not a Saturday morning delivery.

International delivery

  • The delivery details for all dry suits, wetsuits, PBB’s. Carriage price will be confirmed on order, but ranges from £35 – £120.00 depending on destination
  • Jollop, Gloves, Hoods & Boots can be sent with Royal Mail. Carriage price will be confirmed on order but should range from £5.00 – £20.00

Returns policy

O’Three allows customers to return products within 28 days from the dispatch date, for any reason, for a full refund of the product price. The original delivery charge is excluded.

For more information, visit Delivery, Returns & Refunds or alternatively contact us via sales@othree.co.uk or by telephone +44 (0)1305 822820 and one of the team will be able to help you.

Made-to-fit adjustments

All of our neoprene drysuits come complete and ready to dive with several adjustments completely free of charge. If your drysuit requires more complex adjustments like increasing or reducing diameters, an additional labour charge of £125.00 is applied.

Free

  • Seal alterations
  • Arms shortening/lengthening
  • Legs shortening/lengthening
  • Change in boot size

£125.00

  • Full body increase/decrease in diameter
Features

Why divers choose the MF5

Warmth you can genuinely feel

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Built around real cold-water diving

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Flex effortlessly in and out of the water

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Built to last

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Activities

See which activity the product was developed for.
There are of course many other possible uses.

5/5

Cold water diving

4/5

Cave diving

5/5

Wreck diving

4/5

Technical diving

5/5

Recreational

5/5

Club-diving 

WHY CHOOSE MF5

Warm, comfortable
& dependable

The MF5 has remained at the centre of our range for decades because it gets the fundamentals right. It combines the inherent warmth of high-quality compressed neoprene with the flexibility, durability and fit needed for regular diving in demanding conditions.

MF5 Drysuit attention to detail
01
Engineered for absolute performance

Neoprene is tested for how it compresses, rebounds and holds heat under pressure.

MF5 Drysuit abrasion resistant
02
Dependable protection

Engineered for abrasion resistance. Ready to take years of abuse without turning brittle or heavy.

industry leading drysuit
03
Attention to detail

Every seam and component is carefully crafted to improve durability, comfort and long-term reliability.

5 star Google Reviews

Recommended by diving communities throughout the world

Discover reviews from

Verified Customers

5☆ service from start to finish. I'm new to scuba so buying a deysuit for the first time is a big investment coupled with everything else you have to buy. These guys no there stuff and the home fitting service was amazing. The whole experience of getting into a drysuit…

Danny Bromfield

Absolutely first class customer service and tailoring of my drysuit. Before, my buddies struggled to zip me up. Contacted O’Three, really got to grips on where I needed the suit tailoring through sending photos of me in it. Fully briefed on the options and costs. Went ahead and returned in…

Nigel Clark

I was very impressed with the unbelievably outstanding service & the product – from start to finish. The thorough 5.5 page sizing guide/ test suit/ video call/ proactive user friendly parcel handling approach/ the welcome pack/ the personalisation/ the optional extras/ the spares & various solutions & of course the…

Mino Romanos

Can not thank them enough for their help, dry suit was to small after a break in diving,

Debi Patrick

The MF5 in the wild

Man wearing an O'Three MF Neoprene Drysuit

Combine with

How it works

Create your perfect drysuit

01
Select your neoprene or trilaminate drysuit
Our team is always at hand to help you choose either a neoprene or trilaminate drysuit based on your diving environment, warmth preferences and travel requirements.
02
We’ll confirm your measurements before production
Once you have chosen your drysuit design and material, our team will contact you to confirm sizing and recommend adjustments that might be required prior to dispatch
03
Your drysuit will be made to fit at no extra cost*
All of our drysuits come complete and ready to dive with several adjustments completely free of charge. If your drysuit requires more complex adjustments like increasing or reducing diameters, an additional labour charge of £125.00 is applied.
04
Go diving!
Your made-to-fit suit delivered to you, complete with a quality suit bag, changing mat, Jollop seal lube and Bees wax – everything you need for your first dive in your O’Three drysuit!
Shop drysuits

I live in Scotland so was a bit hesitant about buying a made-to-measure drysuit online. Well what a pleasant surprise dealing with O’Three. Excellent service from start to finish. Well done!

Brian Millarvie

Verified Customer

35+ years

Designed around real diving and UK cold-water diving conditions

Made in UK

Designed and crafted by hand because every diver moves differently

Built to last

Serviceable, repairable and supported long after purchase

4.9/5 rating

Trusted by explorers, instructors, technical divers and expedition teams.

Expert support

Speak to specialists who understand and are passionate about our industry