The Interstate is not only Thule's most weather resistant cargo bag ever, it's also big enough to carry your whole family's vacation gear and durable enough to last for years.This product will be shipped directly from Thule and will leave their warehouse in 2 3 business days. Eligible for UPS ground shipping only. . IP test verified water resistance and sealed seams set the standard for cargo bag weather protection. Twin compression straps keep your gear securely positioned while in transit, minimizing both friction and noise. Padded base protects your vehicles finish from abrasion. 3 sided zipper with generous storm flap provides easy, weather protected access to bag contents. Included heavy duty, double stitched webbing straps secure the bag to roof rack cross bars or raised rails. Folds down easily for compact storage. PVC free construction is durable yet environmentally friendly. Compatible with all Thule rack systems, round bars, and most factory racks.