Description
Thermocline Vest by Fourth Element
Revolutionary Core Protection Without the Bulk
The Fourth Element Thermocline Vest is an advanced thermal layer engineered to significantly increase core body temperature without the added bulk or buoyancy of traditional neoprene. Delivering the thermal equivalent of a 2mm neoprene top, this completely neutrally buoyant vest is the ultimate layering piece to wear beneath a standard wetsuit. By focusing insulation on your core, it maintains absolute freedom of movement for your arms while virtually eliminating the cold shock of water flushing through your wetsuit zipper. For warm-water scuba, freediving, or summer surface sports, it performs exceptionally well as a standalone top, providing robust core protection and wind resistance.
Hypoallergenic Engineering & OceanPositive Sustainability
Constructed without a single drop of neoprene, the Thermocline Vest is a proven, highly effective solution for divers who suffer from neoprene allergies. The garment is part of Fourth Element’s OceanPositive collection, utilizing an outer layer made of 78% recycled nylon, including ECONYL® regenerated from abandoned "ghost" fishing nets. This tri-laminate high-technology fabric features an inner thermal fleece that rapidly wicks moisture away from the skin, passing it through a breathable, waterproof membrane to evaporate on the surface. Extremely travel-friendly, the vest packs into tight spaces without creasing, dries in as little as an hour between dives, and is fully machine washable to eliminate the lingering odors common with standard wetsuits.
Features
- 2mm Thermal Equivalent: Delivers the core warmth of a 2mm wetsuit without the restrictive bulk or added buoyancy.
- 100% Neoprene-Free: A hypoallergenic construction that provides a reliable alternative or protective barrier for divers with neoprene sensitivities.
- Neutrally Buoyant: Requires no additional lead weight, streamlining your rig and improving trim.
- OceanPositive Construction: The outer shell contains 78% recycled nylon, incorporating ECONYL® derived from reclaimed ghost fishing nets and post-consumer waste.
- Tri-Laminate Technology: Combines a wind and waterproof outer, a breathable mid-membrane, and a moisture-wicking inner fleece for maximum comfort above and below the surface.
- Rapid Drying: Dries incredibly fast, often within an hour, making it ideal for repetitive daily diving or tight travel schedules.
- Machine Washable: Easily maintained by machine washing at 30°C, completely eliminating the "smelly wetsuit" issue.
Specs
- Brand: Fourth Element
- Product: Thermocline Vest
- Thermal Rating: Equivalent to 2mm Neoprene
- Buoyancy Profile: Neutrally Buoyant
- Material Composition: 33% ECONYL® Recycled Nylon, 57% Polyester, 10% Elastane
- Sustainability: OceanPositive (Regenerated ghost nets)
- Fit Options: Specific Men’s and Women’s anatomical cuts
- Primary Application: Wetsuit core layering, warm-water diving, freediving, and surface water sports
- Care Instructions: Machine wash at 30°C; do not crease-damage (safe to pack tightly in luggage)
Size Chart
Size Chart
Female Size Chart
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Our promise is that you get the right gear, and that it's right the first time. As divers ourselves, we'll help you find the perfect fit for your style of diving. Then, we'll quality-inspect your order before it ships to ensure it's ready for your next adventure. We're your local dive shop, no matter where you are.