1. Hydration Pack with 1.5 L Backpack Water Bladder. Fits Men and Women with Chest Sizes 27" - 50". Great for Hiking - Running - Biking - Kids (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
WILL FIT YOU PERFECTLY: Adjustable shoulder/chest straps. Will fit chest sizes from teenagers / kids with 27" up to adults (men and women) with 50" chest size. The chest straps makes sure it doesn't bounce when you move.GOOD VOLUME: Includes storage compartments that will fit your clothes, iPad, phones 11" -12" laptops and even a DSL camera. For even more storage, the side pockets allows you to pack even more on your hike, mountain bike.

2. TETON Sports Trailrunner 2 Liter Hydration Backpack Perfect for Biking, Running, Hiking, Climbing, and Hunting; Blue (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
LIGHTWEIGHT: Weighs less than a pound (0.9 pounds) A great backpack for men, women and youth to stay hydrated

3. Updated Stronger Hydration Pack with 70 oz 2L Bladder for Running Hiking Riding Camping Cycling Climbing - Best Lightweight Backpack Water Bag for Runner Outdoor Bicycle & Bike Sports (Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.6 out of 10
1.PERFECT SET - Include 2L FDA APPROVED food grade hydration bladder2.SUPER LIGHT - Weight 0.77 lb with 2L bladder in high quality of the workmanship & Nylon material, it definitely wont burden you when sporting

4. Tactical Hydration Pack Backpacks with 2.5L Bladder for Hiking, Biking, Running, Walking and Climbing (BLACK) (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
Adjustable shoulder/chest straps. Will fit chest sizes from teenagers/kids with 27" up to adults (men and women) with 50" chest size. The chest straps make sure it doesn't bounce when you move Whistle buckle for emergency

5. Hydration Backpack--Juboury Water Rucksack Bladder Bag for Running Hiking Cycling and Any Other Outdoor Sports with Free 2L TPU Hydration Bladder (Black) (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
✔DESIGN: Two layers cargo design,one for hydration bladder,and the other for extra carrying purpose✔GOOD VOLUME: Except the the bladder compartment,also includes storage compartments that will fit your clothes, iPad,phones.