Fourth Element Men's J2 Long Sleeve Base Layer Top - Thermal Performance & Comfort with OceanPositive Recycled Fabric
- Expedition-Proven Performance – Developed for the J2 caving expedition and tested continuously for 19 days, 24 hours a day, ensuring reliability in extreme conditions.
- Lightweight & Compact Design – Low-bulk construction makes it easy to pack, layer, and wear comfortably under a drysuit or thermal undersuit.
- Fast-Wicking Comfort – Efficiently moves moisture away from the skin to help maintain comfort during long and demanding dives.
- OceanPositive Recycled Fabric – Made using recycled polyester as part of the OceanPositive initiative, supporting more sustainable diving gear.
- Flexible & Durable Blend – Constructed from 90% recycled polyester and 10% elastane for stretch, comfort, and long-lasting performance.
The OceanPositive J2 Base Layer is designed to provide long-lasting comfort and dependable thermal performance under your drysuit. Made with GRS-certified recycled polyester, it offers a soft, next-to-skin feel that’s ideal for all-day wear and easy layering beneath your thermal undersuit. Lightweight, breathable, and eco-conscious, the J2 Base Layer supports extended dive comfort while being packaged without plastic for a more sustainable choice.
WARNING: This product can expose you to chemicals including lead, which is [are] known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov


