BAMBOO LINING, four way stretch and superior heat insulation.100% Ultra-stretch, ultra-softX Zip 2 system: short horizontal front zipper on outer flap, seal with pull cord barrel lock, ultra-stretch inner step in yokeDurable, water repellent QuikDry SUPERLITE NeopreneUltra-stretch side neck panelsTHERMOBARRIER Ultra-stretch texture skin upper front, back chestTHERMOBARRIER Ultra-stretch lower bodyUltra-stretch FUSION SEAMS throughout suitUltra-stretch PRESSURE BONDED taped seams in lower bodyNo hooks or loops to damage NeopreneDouble-glued and blindstitched zipper flaps, glued zipper, key pocketReinforced outer edge of inner neckDouble glued seams, no sewing on inside of lower bodyDurable, contoured DuraFlex knee panelsPre-bent arms, kneesSafety snap for zipperFUSION SEAL at the Ankle and wrist