Musto Men's Champ 3mm Long John Deep Ocean

A high‑performance 3mm Long John engineered for active sailors. Great for those who need warmth, flexibility and all‑day comfort in 12–18°C conditions.

Built from high‑stretch neoprene with body‑mapped panels, this wetsuit balances insulation where you need it with freedom of movement where it counts. Reinforced seat and knee panels add durability for long sessions on the water.

A relief opening offers practical convenience, and the adjustable leg length — complete with ready‑to‑cut bar tacks — lets you tailor the fit to your exact height. Laser‑cut drainage holes prevent water pooling at the lower leg, and the thermal lining helps lock in heat when the wind picks up.

A dependable, race‑ready layer for dinghy sailors who demand performance without compromise.

Key Features

• High‑stretch neoprene - Delivers excellent flexibility across the body, keeping you agile during tacks, gybes and high‑energy manoeuvres.
• Body‑mapped thermal lining - Insulates key muscle groups to maintain core temperature in 12–18°C sailing conditions.
• Reinforced seat and knees - Abrasion‑resistant panels protect high‑wear areas, ideal for dinghy sailors spending long hours on the rail.
• Flatlock seams - Soft, low‑profile stitching minimises chafing and keeps the suit comfortable during extended sessions.
• Adjustable leg length - Ready‑to‑cut bar tacks let you shorten the legs cleanly, ensuring the perfect length.
• Relief opening - A discreet, functional design that saves you from fully undressing between races or during long days afloat.
• Laser‑cut lower‑leg drainage - Allows trapped water to escape quickly, keeping the suit lighter and more comfortable.
• Gusseted crotch - Improves freedom of movement when hiking, crouching or transitioning across the boat.

Product Care

• Wash inside out
• Wash with similar colours
• Do not use biological detergents
• Do not use fabric softener

Royal Mail Service Update: Please be aware when choosing Royal Mail as your preferred delivery method, your delivery time may be impacted by ongoing strikes and may take up to 20 working days. If your order is time critical we suggest choosing a courier or Next Day Service

Our Mail Order team ship chandlery, yacht parts and sailing clothing around the world. We use the best value couriers available, and we will endeavour to get your products to you as quickly and as cost effectively as possible.

International Orders: Due to delays we have had to suspend our international delivery options. 

UK Standard Delivery

• UK Mainland 0 - 2Kg (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £100.00. This is an estimated delivery window from our chosen courier.
• UK Mainland 0 - 30KG £5.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days. This is an estimated delivery window from our chosen courier.
• UK Mainland 0 - 30KG OVER 1.2m LENGTH £15.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days. This is an estimated delivery window from our chosen courier.
• UK Mainland 30KG+ Price on request
• UK Mainland Next Day 0 - 30KG £9.95 Courier service with signature, orders must be placed before midday. This is an estimated delivery window from our chosen courier.
• UK Mainland Next Day 0 - 30KG OVER 1.2m length £19.95 Courier service with signature, orders must be placed before midday. This is an estimated delivery window from our chosen courier.
• UK Mainland Saturday 0 - 30KG £19.95 Courier service with signature, orders must be placed before Friday. This is an estimated delivery window from our chosen courier.
• Northern Ireland, Highlands & Islands 0 - 2KG (small jiffy) £3.95 Royal Mail Service. Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £100.00. This is an estimated delivery window from our chosen courier.
• Northern Ireland, Highlands & Islands 1 - 30KG £10.95-£14.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• Northern Ireland, Highlands & Islands 1 - 30KG OVER 1.2m length  from £24.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• Northern Ireland, Highlands & Islands 30KG+ Price on request
• Channel Islands 0 - 2KG (small jiffy) £5.95 Royal Mail Service Despatch within 3- 5 working days, delivery in 7-10 working days for orders under £50.00
• Channel Islands 1 - 30KG £19.95 Courier service with signature. Despatch within 3- 5 working days, delivery in 7-10 working days
• Channel Islands 30KG+ Price on request

UK Exceptional Delivery

• UK Mainland; Antifoul & paints £5.95
• UK Mainland; Inflatable dinghy £10.00
• UK Mainland; Liferafts £17.50
• UK Mainland; Flares £49.95
• Northern Ireland, Highlands & Islands; Antifoul & paints £9.95
• Northern Ireland, Highlands & Islands; Inflatable dinghy price on request
• Northern Ireland, Highlands & Islands; Liferafts price on request
• Northern Ireland, Highlands & Islands; Flares not available to ship at this time
• Channel Islands; Antifoul & paints £13.50
• Channel Islands; Inflatable dinghy price on request Channel Islands; Flares not available to ship at this time

Ship to Store service; You can now order from our website for collection from one of our 9 Force 4 locations. Simply select “Ship to Store” at checkout and your goods will be ready for collection within 5 working days. This service is free however may exclude some hazardous or special order goods.

For further delivery information click here.

Standard Returns

If you are not entirely happy with your purchase, we will exchange or refund your goods in full, provided that the items are returned within 14 days of receipt.*

Please check the condition of goods on arrival - we are unable to accept goods damaged during shipping after 14 days.

Returned goods must be packaged securely, with all original packaging undamaged and in a saleable condition i.e. shoe boxes must be in the same condition as when received.

Goods must be unused and security seals intact.*

If you would like to return goods because they were ordered incorrectly or if clothing does not fit, return postage will be at your expense. If you would like us to replace the goods with another size or colour, we will charge carriage on the replacement.

Please be aware that some navigational and safety products may be dated, and as such a full refund may in some cases not be possible. If you are purchasing dated navigational charts we suggest you contact us for more information.

Faulty Goods

If you receive your goods and believe them to be faulty, please contact us straight away with a brief description of the problem. If we require you to return the product for a replacement, we will send you a pre-paid Royal Mail label for delivery back to us. Unfortuantely we cannot send the courier back to collect the items.

Returning goods to Force 4 is easy!

1. Please contact us by ringing 0345 1300 710 or email on [email protected]. This way we'll be able to determine whether you would like to return the product for a refund or whether you'd like to exchange the product. We are unable to process the return of faulty goods that we're not expecting.
2. We'll then give you a returns number. This returns number will need to be clearly marked on the outside of your parcel so it can be identified on arrival. Please note, failure to mark a returns reference number on the outside of your parcel may result in a delay in processing your return.
3. Don't forget your proof of postage, just in case!
4. Once we receive the item we'll be able to proceed with a refund or an exchange.

*this excludes faulty goods with manufacturers defects. If goods are found to be faulty during use, after the returns period, please just give us a ring on 0345 1300 710 and we'll be happy to help.

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