The Oasis1100 by TETON Sports is an 18-Liter day pack that comes with its own 2-Liter hydration bladder and so much more! It's designed with a low-profile cut that fits comfortably. You'll get the best fit with the adjustable shoulder, chest, and waist bands. Shock-absorbing chest strap works with the rest of the harness to reduce bounce. Take it hiking, cycling, camping, backpacking, and anywhere you may need a bit of gear and a lot of on demand water.

2-Liter Hydration Bladder Included
The Oasis1100 comes with a 2-liter hydration bladder. The mouth of the bladder is a large 2-inch (5 cm) opening for ice that also makes cleaning easy.