When you’re on the slopes, the trail, or any place active fun awaits, be sure to bring the GSI Boulder Flask. Made from co-polyester, it is lightweight, eco-friendly and perfect for carrying up to 10 fluid ounces of your favorite beverage safely and securely. The shatter-resistant clear body has a grippy silicone bumper so it can withstand falls without spilling a drop. Its hinged silicone cap makes it easy to open and impossible to lose–no matter how many nips you’ve enjoyed.