Perfect for daily use and a greener alternative to disposable bottle. Square shape makes it to be ultra compact and easy for storage. Square shape makes it to be ultra compact and easy for storage. It is made in Tritan plastic that looks like glass and retains its color and gloss even after hundreds of dishwasher cycles. Tritan is durable plastic that has much greater shatter resistance than other plastics and glass. It won’t warp or crack in the dishwasher.