This compact, collapsible rain cover protects your pack from the downpour while keeping you visible whether you're moving fast on the trail or on your daily commute to work. Its all-round fastening securely attaches to the main body of the pack in all conditions. Made of durable fabrics for a lifetime of use. Size XS is suitable for backpacks with a volume of 10 - 20 litres. Size S is suitable for backpacks with a capacity of 20 - 35 litres.