Xcel uses more environmentally friendly product technologies in the construction of this wetsuit. The limestone mined in the earth replaces petrochemicals in the neoprene. In spinneret dyeing, colored pigments are introduced into a molten solution to create colors that save water consumption, pollution and energy. Water-based adhesive eliminates the harmful volatile organic compounds released into the air and many other eco-initiatives are used to minimize Xcel's environmental impact. The Comp has a waterproof zipper with snap button and drawstring. A technical fit refers to the ergonomic shape like pre-bent knees that match the body's natural position to reduce fatigue. The Comp is triple glued and blind stitched with critical tape strips at stress points. The lining is a plush Thermo Lite Infrared fabric that feels soft against the skin and is very warm. If you want to look and feel great in your wetsuit without breaking the bank, then the Xcel Comp is for you. Details: new plush thermo lite infrared from breast to knee 100% ultraflex nanoprene lite japanese limestone glide skin collar dope dye yarn waterproof zipper engineered fit system one-piece front and rear panel Construction: triple gluing and blind stitching Reinforced stress points with fusionx wallpaper water based glue THERMOLITE IR (Infrared Fiber Infused Lining) A new lightweight, stretchy, quick-drying fiber enriched with infrared to enhance warmth by helping generate and retain heat generated by the body.