So warm and comfy, it's like wearing your favorite pair of pajamas into the water. The undersuit of choice for drysuit diving, CLIMASPHERE thermal wear keeps you warm with a low profile two-piece insulation system. Breathable and windproof, CLIMASPHERE is made of soft four-way stretch fleece material. You can wear one or both pieces under your drysuit at depth for total comfort and warmth, and on deck between dives as cozy casual wear. CLIMASPHERE undersuits come with neoprene wrist and ankle cuffs with thumb loops and stirrups to both enhance warmth and prevent ride-up when climbing into your drysuit.