Sea to Summit's Ultra-Sil Day Pack is not only ultra-light, strong and compact but very practical. Made from our proprietary Ultra-Sil siliconised Cordura fabric, the tiny palm-size pack fits easily onto your key ring, in a jacket pocket or purse. Perfect as a summit pack, for carrying groceries when on foot or on a bike, as an extra travelling tote or for anyone wanting to reduce their environmental footprint by saying no to plastic bags.