A lightweight, high performance, elasticated waist pack carrier with 3M Scotchlite reflective piping for increased visibility. Holds running water bottle & extra nutrition flask for energy gel. To provide a non-restricting source of hydration & carbohydrate replacement during running & cycling. ideal to be used where there is road traffic. Fits 26" to 42" waists. Nathan have been developing products for runners for over twenty years. The Nathan X-Trainer Plus is more than just a water bottle carrier. They have produced the perfect high performance running bottle, nutrition flask & carrier, with design features that will improve your running performance & safety. Nathan X-Trainer Plus features a lightweight waist pack with an exclusive XTS Cradle, which wraps snugly to the contours of the body & holds the bottle & nutrition flask securely. The limited stretch belt is comfortable, secure & breathable due to the moisture wicking mesh design. The X-Trainer Plus has 3M Scotchlite reflective piping for increased visibility & the waist pack also has two expandable zipped pockets for carrying small essentials. The Shock Cord one pull tension lock can be used to secure a jacket in place. The 22oz (0.62 litre) polyethylene bottle & nutrition flask are designed to be squeezed so you can control the flow of liquid, & a textured surface to reduce the likelihood of dropping the bottle or nutrition flask. The bottle also features the patent pending Quick Clip finger loop for easy grabbing & attachment to backpacks & belts. The bottle can also fit into a standard cycling bottle holder. The nutrition flask has a capacity of 5oz (160ml) which is ideal for a 100g portion of an energy gel that can provide essential carbohydrate replacement during intense physical exercise.