OPTIMISTIC RUNNERS Flask 150ML is an essential accessory for the modern urban adventurer. Crafted from robust 100% nylon, this sleek black flask features a streamlined design that integrates effortlessly into any streetwear ensemble. The flask is equipped with a tight elastic band made from 75% nylon and 25% elastane, providing flexibility and durability. Ideal for staying hydrated on the move, it combines practicality with a stylish edge.