Portable Backpack Cover Keep your backpack dry even after experienced pouring water. This Backpack cover made of 190T Nylon fabric. Durable and Tear Resistant. Protecting backpack from scratch, dirt, sand, dust and snow. Guaranteed not to let rain into your backpack. Water sliding from the rain cover quickly leaves you a dry backpack. High reinforced elastic design ensures the rain cover stay still on your backpack to protect it under harsh environment such as windy and rainy days. Elastic design allows you to buy one rain cover and save all your sizes of backpacks. Nearly 360 degree protection for your backpack. The exposed part of your backpack after you put on the backpack will be all covered by our rain cover. No more embarrassing moment when you only got a small umbrella, backpack will be protected from umbrella dropping water.