ULTRA LIGHT waterproof bag - 4L - Green - SEA TO SUMMIT The Ultra Light 4L dry bag has taped taped seams. Hermetic closure on the top by folding to protect your belongings. Silicone Cordura. Ultra compact and minimum size. TECHNICAL CHARACTERISTICS OF THE ULTRA LIGHT 4L WATERPROOF BAG: - Material: 30 denier ripstop, resistant silicone fabric. - Waterproofing: 2000 mm. - Capacity: 4 L. - Dimensions: 14 x 38 cm. - Weight: 26g.