Gul Radiation Thermal Undersuit in Grey The Gul Radiation Thermal Drysuit Undersuit uses 300 gram anti-pilling Quick Dry fleece to provide superior warmth and insulation beneath the drysuit outer later. A superb quality thermal base layer garment to wear under your drysuit which will help enhance the performance of any breathable drysuit. Made from high-tech lightweight fleece material, it traps body warmth but also breathes to allow moisture to evaporate. The breathability of any drysuit will be improved by wearing the correct breathable base layers and the Gul Thermal Radiation undersuit works in conjunction with your drysuit. Features   300 gsm fleece \'onesie\' Quick-Dry breathable polar fleece for warmth and comfort yet lightweight Full length 2-way zip for convenience Crew neck reducing bulk around the neck area Elasticated wrists for snug fit Thumb loops for ease of donning Elasticated middle for tailored fit providing ease of movement Elasticated ankle Foot loops to prevent garment riding up during wear