Bala 1.5 Litre Hydration Bag Description When we exercise we produce heat & to help regulate body temperature we begin to sweat, this fluid loss unless replaced can have a detrimental effect on your performance. Around two-thirds of our body weight comes from water & only a slight reduction in this can cause dehydration resulting in decreased reaction time, loss of concentration or impaired judgement & decision making. The Ultimate Performance 1.5L Hydration Pack has been designed to ensure you stay properly hydrated even during the toughest of workouts, water when you most need it. This small & lightweight hydration system is perfect for a range of sporting activities including: Running Walking Cycling Providing a convenient hands-free option for this essential nutrient, the Ultimate Performance hydration pack allows users to maintain constant water levels. Slower water intake over a longer period will help to reduce the risk of stomach cramps or a stitch. Features Lightweight 1.5 litre bladder included with the pack Bite valve with secure on/off tap prevents leaks when not in use Moisture wicking air-mesh back & shoulder straps for comfort & padding Headphone port & inner stash pocket designed to fit any portable player Reflective decal to help ensure safer training on a night Easy open pockets allowing for quick & easy access to energy bars & gels Single finger zippers which quick & easy to use Universal fitting with fully adustable straps