Stay hydrated on the dance floor with our Acid Themed Rave Hydration Pack. Made of durable polyester material, this pack features a 2 liter bladder for ample hydration on the go. Adjustment straps allow for a snug fit, while the included safety whistle adds an extra layer of security in crowded environments. Perfect for music festivals and dance parties, this hydration pack is the perfect accessory for any rave enthusiast. Stay safe and stay hydrated..