Gul VIPER 6/5/4 Yamamoto Hooded Chest Zip Wetsuit - Black

The GUL Viper 6/5/4mm Yamamoto GBS Hooded Steamer is built for serious cold-water conditions, delivering maximum warmth without sacrificing flexibility. Designed and tested by cold-water specialists, this hooded steamer combines premium Japanese Yamamoto neoprene with advanced thermal technologies to keep the cold out and the heat locked in during the harshest winter sessions.

At the core of the Viper is Graphene X thermal technology, working alongside targeted wind-resistant and wicking panels to maintain warmth where it matters most. A fixed hood, sealed cuffs and ankles, and an advanced chest-entry system all work together to minimise water ingress, while high-stretch materials ensure the suit moves effortlessly with your body.

Details

• ABS: Aqua barrier chest entry to reduce flushing.
• PK Stainless Steel Zip: Size 8 low-profile zip for durability and easy entry.
• Pro Neck: Seam-free neck seal for comfort and improved water resistance.
• Revo Fit: 3D pattern technology for an ergonomic, performance-driven fit.
• S-Seal: Liquid seal cuffs and ankle seals to minimise water entry.
• BEND: Back knee emboss for improved flexibility.
• C39 Wind Mesh: Wind-resistant kidney panel for added warmth.
• Twin-Cinch: Twin adjustable shoulder seals for a secure, customised fit.
• Fixed Hood: Integrated hood for maximum cold-water protection.
• True Thickness Foam: Foam measured before lamination for accurate insulation.
• Key Loop: Upper chest key loop for secure key storage.

Construction & Materials

• Glued & Blindstitched (GBS): Seam construction for strength and reduced water ingress.
• Yamamoto C39: Premium non-petroleum-based Japanese neoprene.
• Pinstripe (Upper Body): X-Flex hydrophobic material that holds less water and is around 15% lighter than standard X-Flex.
• Ripstop Lava (Lower Body): 150% super-stretch material for durability and flexibility.
• Powertex4: Reinforced knee panels for flexibility and abrasion resistance.
• Graphene X: Boltdry-X thermal wicking core body for exceptional warmth.
• Thermospan Thermal Lining: Lower-body lining for ultimate insulation.
• Micro2Flex Internal Lining: Sleeves and upper body lining for maximum freedom of movement.
• Lava Flow Internal Tape: Full internal stretch tape that moves fluidly with the body for added seam reinforcement.

Size Chart

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