Youth Sisstrevolution Seven Seas 4/3mm Back Zip Fullsuit Features:WARMTH & STRETCH a 100% Super stretch Japanese limestone based neoprene - lighter, warmer, softer, stretchier, easier to put on and take off, and allows for more freedom of movement a Thermal stretch lining insulates heat.a Dope Dyed Fabric- Softer, eco-friendly, anti-fade stretch jersey laminated with AquaA eco-friendly water-based lamination is completely solvent free. Made by Bluesign approved mills. DURABLE & WATERTIGHTa Short Back zipper features the double layer Thermal Flush Barrier entry which blocks out water for maximum warmtha Tripled glued, blind stitched seamsa Sisstr super stretch Neo 3.0 tape allows for maximum seam sealing while having unrestricted stretch and comforta Easy access secure key corda Knee pad, Upcycled Supratex abrasion resistant for flexibility and strengtha Liquid tape cuff seals to prevent flushing at cuffsa Glideskin on the neck seals to skin to prevent flushing