SIERRA [sierra.com] has select Hydration Packs on sale below. Shipping is free when you sign up for emails [sierra.com] and use the unique code you receive (new subscribers only). Otherwise, shipping is free on $89+ when you enter promo code SHIP89 at checkout.

Available:

• CamelBak Podium Flow 4 Hydration Belt w/ 21-Oz Reservoir [sierra.com] (Gunmetal) $19.99
• 18L CamelBak Arete Hydration Backpack w/ 50-Oz Reservoir [sierra.com] (Indigo Bunting/Silver) $22
• 5L Nathan Crossover Hydration Backpack w/ 51-Oz Reservoir [sierra.com] (Vapor Grey/Finish Lime) $29
• 8L KingCamp Autarky Hydration Backpack w/ 67-Oz Reservoir [sierra.com] (Blue) $29
• 20L CamelBak Women's Rim Runner X 20 L Hydration Pack w/ 50-Oz Reservoir [sierra.com] (Rosewood) $34.99
• 8L Thule UpTake Hydration Backpack w/ 84.5-Oz Reservoir [sierra.com] (Black) $34.99
• & More [sierra.com]