Casmo BPA Free Tritan Wide Mouth Outdoor Sport Camping Portable Travel Unbreakable Drink Water Bottle Cup 20-oz 1:Large opening on wide-mouth bottle easily accommodates ice cubes, fits more water purifiers and filters, and makes hand-washing a breeze. 2:Easy to wash: BPA Free bottle, which is very easy to wash just by clear water. The 2 brushes in the package makes the cleaning more convenient. 3:Attached Loop-top never gets lost and screws on and off easily. 4:The Lifetime Warranty makes water bottles the best sport bottle you can buy 5:Refillable water bottles Keeping your summer cool.