reducer cup

Munchkin 7oz Plastic Any Angle Click Lock Weighted 2pk Straw Trainer Sippy Cups - Pink/Purple: BPA-Free, Leakproof Design

Zak Designs 12 fl oz Stainless Steel Vacuum Insulated Kelso Straw Tumbler: Kids & Toddler Sippy Cup, Dishwasher-Safe

Zak Designs 3pk 25 fl oz Plastic Solid Straw Tumbler Set: Multicolor Lidded Tumblers for Teens, Dishwasher-Safe

Munchkin Click Lock Weighted Straw Trainer Cup - 7oz - Pink: BPA-Free Polypropylene Sippy Cups with Silicone Lid

Munchkin Click Lock Weighted Straw Trainer Cup - 7oz - Blue: BPA-Free, Portable Drinkware, Flip-Top Lid, Sippy Cup

Zak Designs 2pk 15oz Bluey Kelso Tumbler Set

Munchkin Click Lock Weighted Straw Cup - 10oz - Blue: BPA-Free, Flip-Top Lid, Portable Plastic Drinkware

8oz Stainless Steel Sippy Cup - Green - Cloud Island™

Zak Designs 2pk 15oz Minnie Kelso Tumbler Set Pink/Orange

Munchkin Click Lock Weighted Straw Cup - 10oz - Pink: BPA-Free Polypropylene Drinkware with Silicone Lid

Ello Ava 24oz Glass Straw Tumbler Cream

Stanley 20 oz Stainless Steel Quencher Pro Tour Tumbler Pink Amethyst Calacatta