Protective backpack cover. Waterproof and solid. Specifications Compression straps Storage bag Reflective print Cover with drawstring -S (Suitable for 15 to 30 litre backpacks) -M (Suitable for 20 to 30 litre backpacks) -L (Suitable for 30 to 50 litre backpacks) -XL (Suitable for 50 to 80 litre backpacks) Weight S: 40g M: 50g L: 74g XL: 98g Fabrics Main Fabrics : P 75D 210T 2000MM // 100% Polyester // Waterproofness : 2 000 mm ; DWR Water-repellent treatment PFC Free Eco-responsible criteria Durable and resistant fabric tested in our lab : No Activities Hiking Trek