The Sleeka Force has a central compartment of 2,135 Cubic Inches / 35 liters which makes a great little daypack and gives more than enough space for your daily essentials. The two side compartments are great for storing those things you need readily accessible. It also has contoured and heavily padded shoulder straps faced with textured high wicking fabrics ensure comfort even under the heaviest loads. There is a zipper compartment on the top and bottom. The top zippered compartment is a great place to store those essentials that need to be easily accessed. The bottom compartment is designed to house a Snugpak® Aquacover which can be purchased separate.