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