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- OspreyHydraulics LT Reservoir - 1.5 Liters$40.00(34)34 reviews with an average rating of 4.2 out of 5 stars
- PlatypusBite Valve Cover$12.95(42)42 reviews with an average rating of 4.1 out of 5 stars
- PlatypusHyFLO Bite Valve$9.95(24)24 reviews with an average rating of 4.2 out of 5 stars
- CamelBakReservoir Dryer$16.00(13)13 reviews with an average rating of 4.0 out of 5 stars
- CamelBakCrux 2L Reservoir - 2 Liters$40.00(269)269 reviews with an average rating of 3.6 out of 5 stars
- CamelBakCrux Insulated Tube$22.00(28)28 reviews with an average rating of 3.9 out of 5 stars
- CamelBakHigh Flow Magnetic Tube Trap$15.00(60)60 reviews with an average rating of 3.6 out of 5 stars
- CamelBakCrux Reservoir On/Off Valve$13.00(30)30 reviews with an average rating of 4.3 out of 5 stars
- CamelBakBig Bite ValveTop Rated$8.00(68)68 reviews with an average rating of 4.9 out of 5 stars
- CamelBakBite Valve Cover$8.00(75)75 reviews with an average rating of 4.1 out of 5 stars
- CamelBakBig Bite Valves - Package of 4Top Rated$19.00(22)22 reviews with an average rating of 4.5 out of 5 stars
- CamelBakCrux Replacement Tube$15.00(15)15 reviews with an average rating of 2.8 out of 5 stars
- PlatypusBig Zip EVO Reservoir - 2 Liters$54.95(100)100 reviews with an average rating of 3.6 out of 5 stars
- PlatypusBig Zip EVO Reservoir - 3 Liters$59.95(113)113 reviews with an average rating of 3.7 out of 5 stars
- GregoryInsulated Quick Disconnect Kit$25.95(15)15 reviews with an average rating of 2.9 out of 5 stars
- CamelBakReservoir Cleaning KitTop Rated$24.00(56)56 reviews with an average rating of 4.5 out of 5 stars
- GregoryBite Valve CoverTop Rated$7.95(81)81 reviews with an average rating of 4.6 out of 5 stars
- CamelBakFusion 2 L Reservoir$60.00(18)18 reviews with an average rating of 3.9 out of 5 stars
- CamelBakFusion 3 L Reservoir$62.00(27)27 reviews with an average rating of 3.3 out of 5 stars
- OspreyHydraulics Lumbar Reservoir - 1.5 Liters$38.00(3)3 reviews with an average rating of 2.7 out of 5 stars
- Gregory3D Hydro Trek Hydration Reservoir - 3 Liters$62.95(22)22 reviews with an average rating of 4.4 out of 5 stars
- GregoryMagnetic Bite Valve$11.95(33)33 reviews with an average rating of 4.0 out of 5 stars
- GregoryHydro Hydration Reservoir - 2 Liters$34.95(37)37 reviews with an average rating of 4.0 out of 5 stars
- OspreyHydraulics Bite Valve Sheath - Package of 3$12.00(17)17 reviews with an average rating of 3.4 out of 5 stars
- OspreyHydraulics Bite Valve$9.00(33)33 reviews with an average rating of 3.5 out of 5 stars
- OspreyHydraulics Hose Magnet KitTop Rated$10.00(11)11 reviews with an average rating of 4.8 out of 5 stars
- OspreyHydraulics Bite Valve Cover$7.00(30)30 reviews with an average rating of 2.5 out of 5 stars
- OspreyQuick Connect Kit$12.00(8)8 reviews with an average rating of 3.4 out of 5 stars
- HydraPakHydraSleeve Reservoir - 3 LitersTop Rated$68.00(30)30 reviews with an average rating of 4.8 out of 5 stars
- CamelBakReservoir Gravity Kit$11.93Save 29%compared to $17.00(1)1 reviews with an average rating of 5.0 out of 5 stars
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Related Expert Advice articles
Types of packs
Backpacking packs can be 30 to 70-plus liters. To choose the right capacity, consider trip duration and the gear you’ll bring.
Backpack features
Think about the frame type, location of important pockets, padding and ventilation, among other things.
Backpack fit
Your pack should be correctly sized for your torso length (not overall height) and hip circumference. A fit-expert at an REI store can help.
Stay organized and travel like a pro with our favorite travel packs. Whether you're touring a modern city or visiting off-the-beaten-path parks, we’ve got you covered with travel backpacks available at REI, each hand-picked by staff.
Read full article: The 8 Best Travel Backpacks of 2025: Staff Picks
Learn how to measure torso length and hip size so you can get the right backpack size. Then, learn to adjust the straps for an ideal fit.
Learn the tricks for packing and hoisting your backpack, including ways to balance the load, organize gear and ensure essentials are handy.
Learn how to clean and care for your backpack so it performs better and lasts longer.
Learn what it takes to go solo backpacking, including how to manage risks, where to go and what gear to pack.