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Hydration Packs

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Hydration Pack Accessories

EMS has all the accessories you need for your hydration packs. Shop for everything from rain covers and cleaning tools to replacement tubes and filters.  MOREMORE

Hydration Packs

Carrying your water has never been lighter or easier. The ingenious design of these hydration packs allows you to comfortably carry all the water you need. Refill easily as necessary. MOREMORE

Hydration Pack Bladders

Need a new reservoir? EMS has a great selection of hydration pack bladders that let you update or replace your old reservoirs easily. BACKBACK

 
 

How to Choose Hydration Packs

Read our expert tips on how to choose a hydration pack, so you buy the best pack for you!


Determine pack use

The size and style of the hydration pack should be largely determined by the intended activity. Before picking a pack, decide whether you will be running, cycling, hiking, Nordic skiing, or backpacking.

Pack use for high aerobic sports

Runners, cyclists, and skiers should opt for a waist pack-style or a low-profile (slender) backpack-style hydration system. These designs will not yank you off balance.

Hydration Pack styles for hiking

Hikers can afford to go with a bulkier backpack that includes plenty of cargo space for gear.

Hydration systems for backpacking

Backpackers cannot wear an independent hydration pack, but they can stow a bladder and hose inside their full size backpack. In this case, they should ensure that their backpack includes a port for the hose and an interior sleeve that will hold the bladder.

Decide on resevoir size

Hydration requirements differ quite a bit depending on the person, the activity, and the weather. A runner can easily sweat a liter (34 fluid ounces) an hour. Know your own body's needs and take into account how long you will be out for, and if you can refill along the way. The most common reservoir sizes are 50, 70, and 100 fluid ounces.

Determine cargo requirements

What do you need to carry besides the water? A trail runner might just want to stash an energy bar, while someone on a long day hike might pack a veritable picnic. Think about what you usually bring with you. The cargo capacities of hydration packs are measured in cubic inches.

Consider Pack weight

When choosing water and cargo capacity, also take into account how much the pack will weigh when full. 100 fluid ounces of water weighs about 6.5 pounds. That is a lot for a runner to carry on their back.

Choose insulated or non-insulated packs

An insulated bladder sleeve and foam insulation around the hose will help prevent freeze-up in winter. Conversely, the insulated sleeve also keeps cold water from heating up too rapidly in hot weather. These can be nice features, though they do add to the cost of the pack.

Waist belt

Any hydration pack that weighs six or more pounds when full should include a waist belt. This will keep the pack from flopping around too much when you run and jump.

Sternum straps

Always a good idea, a sternum strap keeps the shoulder straps in place, no matter the activity


CAMELBAK 100 oz. Antidote Reservoir - Eastern Mountain Sports
CAMELBAK 100 oz. Antidote Reservoir
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PRICE: $35.00
OSPREY Hydraulics HydraForm Reservoir, 3 L - Eastern Mountain Sports
OSPREY Hydraulics HydraForm Reservoir, 3 L
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PRICE: $36.00
OSPREY Hydraulics HydraForm Reservoir, 2 L - Eastern Mountain Sports
OSPREY Hydraulics HydraForm Reservoir, 2 L
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PRICE: $34.00
CAMELBAK HydroBak Hydration Pack - Eastern Mountain Sports
CAMELBAK HydroBak Hydration Pack
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PRICE: $49.00
CAMELBAK 50 oz. Antidote Reservoir - Eastern Mountain Sports
CAMELBAK 50 oz. Antidote Reservoir
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PRICE: $30.00
CAMELBAK Delaney Waist Pack  - Eastern Mountain Sports
CAMELBAK Delaney Waist Pack
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PRICE: $35.00
CAMELBAK 70 oz. Antidote Reservoir - Eastern Mountain Sports
CAMELBAK 70 oz. Antidote Reservoir
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PRICE: $33.00
OSPREY Hydraulics LT, 2.5 L Reservoir - Eastern Mountain Sports
OSPREY Hydraulics LT, 2.5 L Reservoir
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PRICE: $30.00
CAMELBAK Big Bite Valve, 3 Pack - Eastern Mountain Sports
CAMELBAK Big Bite Valve, 3 Pack
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PRICE: $12.00
CAMELBAK Antidote Cleaning Kit - Eastern Mountain Sports
CAMELBAK Antidote Cleaning Kit
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PRICE: $20.00
PLATYPUS Big Zip LP 3L - Eastern Mountain Sports
PLATYPUS Big Zip LP 3L
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PRICE: $36.95
CAMELBAK Arc 2 Bottle Belt - Eastern Mountain Sports
CAMELBAK Arc 2 Bottle Belt
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PRICE: $45.00
CAMELBAK Antidote Insulated Director - Eastern Mountain Sports
CAMELBAK Antidote Insulated Director
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PRICE: $22.00
CAMELBAK Women's Charm Hydration Pack - Eastern Mountain Sports
CAMELBAK Women's Charm Hydration Pack
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PRICE: $49.00
CAMELBAK Arc 1 Bottle Belt - Eastern Mountain Sports
CAMELBAK Arc 1 Bottle Belt
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PRICE: $35.00
CAMELBAK Bite Valve Cover - Eastern Mountain Sports
CAMELBAK Bite Valve Cover
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PRICE: $6.00
CAMELBAK Ergo Hydrolock Valve - Eastern Mountain Sports
CAMELBAK Ergo Hydrolock Valve
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PRICE: $6.00
CAMELBAK Cleaning Tablets - Eastern Mountain Sports
CAMELBAK Cleaning Tablets
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PRICE: $12.00
CAMELBAK Rain Cover, S/M - Eastern Mountain Sports
CAMELBAK Rain Cover, S/M
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PRICE: $10.00
CAMELBAK Pure Flow Replacement Tube - Eastern Mountain Sports
CAMELBAK Pure Flow Replacement Tube
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PRICE: $9.00
EMS Bottle Grip - Eastern Mountain Sports
EMS Bottle Grip
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PRICE: $15.00
PLATYPUS HyperFlow Bite Valve - Eastern Mountain Sports
PLATYPUS HyperFlow Bite Valve
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PRICE: $5.95
CAMELBAK Rain Cover, M/L - Eastern Mountain Sports
CAMELBAK Rain Cover, M/L
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PRICE: $12.00
CAMELBAK Quick Link Conversion Kit - Eastern Mountain Sports
CAMELBAK Quick Link Conversion Kit
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PRICE: $10.00
CAMELBAK Hydrolink Filter Adapter - Eastern Mountain Sports
CAMELBAK Hydrolink Filter Adapter
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PRICE: $7.00
CAMELBAK Big Bite Valve - Eastern Mountain Sports
CAMELBAK Big Bite Valve
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PRICE: $6.00
CAMELBAK Camel Clip - Eastern Mountain Sports
CAMELBAK Camel Clip
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PRICE: $5.00
CAMELBAK Quick Grip Bottle - Eastern Mountain Sports
CAMELBAK Quick Grip Bottle
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PRICE: $23.00
EMS Espresso Waist Pack - Eastern Mountain Sports
EMS Espresso Waist Pack
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PRICE: $30.00
OSPREY Hydraulics LT, 1.5 L Reservoir - Eastern Mountain Sports
OSPREY Hydraulics LT, 1.5 L Reservoir
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PRICE: $28.00
SOURCE Helix Valve - Eastern Mountain Sports
SOURCE Helix Valve
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PRICE: $8.00
CAMELBAK Flow Meter - Eastern Mountain Sports
CAMELBAK Flow Meter
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PRICE: $30.00
CAMELBAK Quick Link Thermal Kit - Eastern Mountain Sports
CAMELBAK Quick Link Thermal Kit
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PRICE: $20.00
PLATYPUS Big Zip Tube Kit - Eastern Mountain Sports
PLATYPUS Big Zip Tube Kit
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PRICE: $19.95
CAMELBAK Fresh Filter Replacement - Eastern Mountain Sports
CAMELBAK Fresh Filter Replacement
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PRICE: $10.00
CAMELBAK Fresh Reservoir Filter - Eastern Mountain Sports
CAMELBAK Fresh Reservoir Filter
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PRICE: $20.00
CAMELBAK Reservoir Dryer - Eastern Mountain Sports
CAMELBAK Reservoir Dryer
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PRICE: $12.00
CAMELBAK Unbottle, 70 oz. - Eastern Mountain Sports
CAMELBAK Unbottle, 70 oz.
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PRICE: $47.00

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