Freaker Batman Koozie One Size Fits All! Sippy cup? Yep. Water bottle? Yep. 40 oz? Yep. MOST PERFECT GIFT EVER? Yep. Insulates!! (I know, I know, big words. Here: It keeps all your drinks cold!) Made in the Freakin' USA! American jobs thank you kindly for your support! Machine Washable!