storm cover made to fit aero spada 51 liter / aero spada 51 liter pack combination only •Lightweight ripstop material with elastic bottom •Secures around bag with strap and double d-ring on bottom Product Description Storm/Rain Cover Designed to make your Ventura Touring Packs completely waterproof. Note that all Ventura bags are made from waterproof materials, however, the seams and zips can lead to water ingress. Forget this phenomenon by using a genuine Ventura Storm Cover. Each cover is made from parachute material for the ultimate in lightweight strength and is shaped specifically for each bag, including 'Aero' bag combinations. SC145/145 fits two Aero-delta 35 Litre Ventura Bike-packs when zipped together $45.00 (free postage) Here is exactly the same storm/rain cover used in action when 2 of the Ventura 51LT bags zipped together and nope, that's not the Egyptian Pyramid on the back of my bike LOL It came in very handy during my trip to Phillip Island and back.