Energy Flask is a refillable semi-rigid gu flask for endurance sports used to carry energy gel, DIY energy fuel, hydration mix, pickle juice or water. These reusable, small gel bottle are simple, fast, and convenient to use and provide a better way to fuel your next workout or adventure. Perfect hammer flask for running, cycling, triathlons, hiking, climbing, snow sports, bike packing, or any endurance sports activity. Compact design makes this gel bottle easy to fit where you need them to: cycling jersey pocket, flipbelt, frame or bar bag, hip pack, fuel belt or hydration pack.COMPACT and BPA/PVC FREE - Unlike other larger gel bottles, Energy Flask is only about 4" tall and holds 110 ml (3.5oz) capacity. Semi-rigid. Squeezable. Easily fits in small places like cycling jersey pocket, bike frame bags, running fuel belt, hip pack, ski pack, hiking bag, summit pack, or hydration pack. SAVE $$$ and REDUCE WASTE - Can use do-it-yourself (DIY) sports fuel. Create your own gel mixtures with maple syrup, honey, coffee, Nutella, etc. Better for the environment by eliminating individual gel packets. EASY – Simple to open/close with secure cap. Unlike other gu bottle, Energy Flask has a wide mouth that makes it easy to fill and simple to clean (dishwasher safe). Molded finger holds on one side for secure grip. CLEAN – Eliminate sticky messes and carrying empty gel packet waste. CONVENIENT – Small gel flask that is easy to use and easy to clean. No more struggling with individual gel packets during your workouts or races. These gel flasks allow you to consume as much or as little as you need, as often as you want.Age Range (Description): Adult. Special Feature: Wide Mouth. Capacity: 110 Milliliters. Material: Plastic. Brand: Energy Flask. Date First Available: October 20, 2020. Best Sellers Rank: #37,236 in Sports & Outdoors. Customer Reviews: 4.5 out of 5 stars 113 ratings 4.5 out of 5 stars. : B08LHN3WMC. Batteries Required?: ?No. Special Features: ?Wide Mouth. Finish: ?Polished. Package Dimensions: ?5.83 x 4.02 x 1.46 inches. Item Weight: ?1.23 ounces. Part Number: ?001. Manufacturer: ?Energy Flask. Unit Count: ?2 Count. Sport: ?Cycling, Climbing, Running, Hiking. Finish Type: ?Polished. Shape: ?Rectangular. Reusability: ?Reusable. Number of Items: ?2. Age Range (Description): ?Adult. Special Feature: ?Wide Mouth. Capacity: ?110 Milliliters. Material: ?Plastic. Brand: ?Energy Flask.