O'Neill Men's Dive J-Type 7mm Back Zip Full Wetsuit with Hood


  • 12mm Total Insulation in Chest/Back
  • Double Sided Fluid Seam Weld Construction - 100% Sealed
  • 100% Dive Grade UltraFlex Durable Stretch Neoprene
  • Interior Firewall Chest, Back, and Hood wick away moisture and increase warmth
  • Code Red Urethane Coated Back Zip blocks out water


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The 7mm J-Type FSW wetsuit offers the ease of the J-type entry/closure system with the minimal bulk, seal, and convenience of a one-piece hooded full suit. The J-Type name comes from the integrated "John" interior. You have 12mm of protection in the core of the wetsuit.

Product details
  • Is Discontinued By Manufacturer : No
  • Package Dimensions : 24 x 19 x 5.5 inches; 7.25 Pounds
  • Item model number : 3994-Black-Small
  • Department : Unisex-adult
  • Date First Available : July 6, 2011
  • Manufacturer : O'Neill
  • ASIN : B005XXC20K
  • Amazon Best Sellers Rank: #362,238 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
    • #271 in Full Wetsuits

This suit slips on fairly easily, the interior lining is smooth as silk. It conforms perfectly to your body and in the cold waters of Puget Sound (40's F.) you are toasty warm for as long as you want to stay in. I cannot recommend this suit too highly. You will need to adjust your weight system, the thickness of this suit creates a lot of ballast, so you'll need to add a bit of weight or you'll never go down. Only down side is if you own a dry suit, you'll wish you didn't after trying this.

Made two different local dive trips with this suit. First one was 2 dives in 67 degree water- each one being about 35 minutes. Takes a lot of weight to become negatively buoyant. Second dive was 2 40 minute dives in 60 degree water. Never even noticed the water temperature on either trip. I have no problem getting it on or off. The velcro kind of pulls the very top layer of the suit material and you need to be careful where you sit or you can snag and scuff the suit. Be nice to have some rubber on the seat to prevent snagging when sitting on rocks prepping for a shore dive. Be sure to take something similar to a plastic place mat to sit on when wearing this suit unless you have manufactured smooth benches to sit on.

I love this. My second wetsuit. My first broke a zipper but it was my fault. If you have a bigger neck I'd get the 2xl. I'm 215 and I have the 2xl. I dive alone and I just extended the string on the back of this suit and I can get into this by myself. Best suit I have ever owned.

I use this wet suit for diving in the pacnw. Yes, some may say I'm crazy for using this in 44 to 50 degree F water, but I don't get cold in it provided my hands and feet are well covered. It's a bit tricky to dry out, and getting into it is a bit of a challenge - - but easier than most other wetsuits. It's a bit annoying that the Velcro grabs everything internal on the suit, making turning it back right-side-out more than a bit tricky.

But, it's warm, fits great, very stretchy.

Absolutely incredible product. With that said, you must go into this purchase knowing that a 7mm wetsuit will be snug, as it should be. I coupled this with 5mm boots and had no problem spending an hour in 50 degree water. I have used 7mm suits by other companies including Aqualung and Scubapro and this is far and away the warmest I have used and the most flexible. I definitely recommend this product.

This suit was extremely warm. I bought a large but at 190lbs and 5" 11 it was a tad to small. Getting it on was a real pain. I would have exchanged it for a x large but they wanted an extra $300 for the xlarge!! I returned it and got a different suit. Had it have work out it seems like it would have lasted a very long time. Great construction and great materials used..

This is very thick and bulky wetsuit, and its sizing is smaller than normal. I normally wear a large wetsuit, and when I bought this in a large, it was not fitting at all. Given that this is a multi-layer suit, that makes it even more diffucult to put on. I ended up returning it and getting a single layer suit. (still 7mm)

This wetsuit is amazing for cold water diving. I've taken it to 100 feet of water here on the California Coast near Monterey and I'm still warm. Highly recommended for anyone not willing to take the dry suit plunge yet.

Excellent product