The Shape-Shift takes Hydrapak's Elite Reversible Reservoir and adds a versatile baffle. The baffle can be zipped to slim the reservoir profile and unzipped to increase fluid volume or reverse to clean and dry. The patented wide slide top opening allows for fast filling and secure seal.

BPA and PVC Free. Patented wide slider opening for quick filling and leak proof seal. Constructed with 0.25 mm thick TPU (thermoplastic polyurethane) for superior durability and flexibility. Shape-Shift technology provides optional baffle while maintaining reversibility. Reversible for easy cleaning and drying.

Capacity: 3 Liters. Item Weight: 0.43 Pounds. Item Dimensions LxWxH: 6.5 x 0.79 x 17 inches. Brand: Hydrapak. Date First Available: November 17, 2009. Best Sellers Rank: #304,240 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 79 ratings 4.3 out of 5 stars. : B005SQEHS2. Sport Type: ?Multi-Sport. Size: ?100 oz. Included Components: ?Hydrapak 3L. Style: ?Shape-shift Reservoir. Model Year: ?2011. Part Number: ?28-5103. Manufacturer: ?Hydrapak. Number of Items: ?1. Suggested Users: ?Unisex-adult. Model Name: ?Hydrapak 28-5103. Warranty Description: ?Limited Manufacturer. Brand Name: ?Hydrapak. Item Weight: ?0.43 Pounds. Item Dimensions LxWxH: ?6.5 x 0.79 x 17 inches. Package Weight: ?0.44 Pounds. Item Package Dimensions L x W x H: ?9.45 x 8.27 x 1.81 inches.