LIGHT & FLEXIBLE - Waterproof has developed and tested drysuit materialtogether with the producers since 1983 and this is the best lightweightdrysuit fabric they have ever developed. The special formula Tri-Lam fabric islightweight, soft and durable - a rare combination. It is sewn together withsingle stitch and soft rubber taped seams which ensures a very flexible andcomfortable suit. Soft, flexible Neoprene boots and plastic zipper keeps theweight down. The whole suit including valves, boots, seals and suspendersweighs only 4.1 kg (Mens medium) VERSATILE - The D3 Ergo originates from theExpedition Drysuit EX2 which has its roots in special forces military suitswhere light weight, flexibility and movability is essential. After the EX2 hadbeen on the market for a while Waterproof realized that it was being used invery different environments. Both Tech divers and Polar Diver Guides loved it.The suit was much more versatile than anyone could imagine. Therefore, it wasdecided to make a new suit with the same characteristics but with a strongTri-lam fabric instead of the EX2 breathable membrane. Including exchangablesilicone seals and a pee zipper. So if you love movability, flexibility, asnug fit, low weight but still a durable suit - this is the one for you. SLIMFIT - Since the D3 derives from a military suit, it is designed forunrestricted movability and control, both above and below the surface.Therefore it has a slimmer cut around the torso and legs for less drag andunnecessary air movement which enhances control. The D3 still has a bit morespace around the shoulders to improve the movability in this area. With theplacement of the dry zipper and the very soft Tri-lam fabric there areliterally no restrictions in movement.