Brita 23.7 Ounce Hard Sided Water Bottle with Filter - BPA Free - Gray FILTER ON THE GO: The filter inside the BPA free bottle filters as you drink to easily rehydrate at the office, a sporting event or on a day trip. BETTER TASTING: The water bottle filters and reduces chlorine taste and odor found in tap water as you drink. CONVENIENT: The hard-sided plastic, built-in carrying loop and flip open straw make this water bottle effortless to take on the go. REDUCE & SAVE: One water filter can replace up to 300 standard 16.9 ounce water bottles, keep you hydrated, save you money, and reduce plastic waste. CARE DETAILS: Water bottle is top rack dishwasher safe and for optimum performance, filter should be replaced every 40 gallons or every two months.