best travel backpack for 15.9 computer laptop 17.5L Commuter Backpack: Water-Resistant Bag 16" Laptops – TORRO USA hay Waterproof Laptop Sleeves - Color:Field Tan

best travel backpack for 15.9 computer laptop 17.5L Commuter Backpack: Water-Resistant Bag 16" Laptops – TORRO USA hay Waterproof Laptop Sleeves - Color:Field Tan

Waterproof Laptop Sleeves - Best Buy

While the rain cover completely blocked the rain, the exposed straps quickly soaked through

hay

Color:Field Tan

Here are a couple articles that can help you though: Introducing your dog to wearing a pack, getting your dog used to balancing and space awareness, and increasing the weight and improving fitness – Trehugger 3 methods for getting your dog used to wearing a dog backpack – Wag Dog Walking What Can You Put in a Very Small Dog Backpack