Sea to Summit Ultra-Sil 20L Day Pack (Yellow) Hot on the successful heels of the Sea to Summit Ultra-Sil TM Shopping Bag, the new Ultra-Sil TM Day Pack is not only ultra-light, strong and compact but very practical and environmentally friendly. Made from their proprietary Ultra-Sil TM siliconised Cordura fabric, the tiny palm-size pack fits easily onto your key ring, in a jacket pocket or purse. Perfect for carrying groceries on foot or on a bike and anyone wanting to reduce their environmental footprint by saying no to plastic bags. * Ultra-light - only 68g * Bar-tack reinforced stitching * Siliconised Cordura for strength and durability * Compact design with key tab loop * Water resistant fabric contains shopping spills and wet swimsuits or jackets * Volume - 20 litres