These dry bags are covered with a siliconised coating on the outside of the fabric and PU coating on the inside, with fully taped seams to ensure your contents will stay perfectly dry._The 5L, 10L and 25L dry bag sets suit any purpose, and the bright colours will help you separate and identify your gear with ease. Simply roll the top over 3 times and close using the lightweight Kross buckle to keep all water out._Waterproof PU-coated fabric with fully taped seamsRoll-top closure with lightweight Kross buckleHypalon finger-loop on the base to aid extractionElliptical shape for maximum space efficiencyRipstop - Ultralight 30D siliconised ripstop fabricDofE Recommended Kit - This product is specifically recommended by the DofE charity as the best choice for those taking part in their bronze, silver, or gold awards