Walmart.com has an Outdoor Hydration Backpack, 50-oz for $19.67 with Free Shipping to select local stores.
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- 1.5 litre (50 oz.) food-grade reservoir with mouth large enough to accept ice cubes n
- Soft Tooth bite valve and long tube for quick hands-free sips n
- Storage for pump, patch kits, energy bars, keys, etc. n
- Breathable mesh padding n
- Durable rip-stop nylon construction