heavy duty suction cups

Nuby 3pk Clik-It Flexi-Straw Cup - Aqua/Gray/Blue - 10oz: Portable Silicone & Polypropylene Drinkware Set

Nuby 3pk Clik-It Flexi-Straw Cup - Purple/Pink/Aqua - 10oz

Nuby No Spill Super Spout Trainer Cup - Bright Blue - 8oz

Lulyboo 3pcs Silicone 3-in-1 Training Cup - Sage

Nuby 5oz 2 Handle 360 Cup - Boy - 3pk: Leakproof, Spoutless Drinkware with Screw-On Silicone Lid, Portable Sippy Cups

Nuby 10oz 360 Sippy Cup - Boy - 3pk: Leakproof, Spoutless, Silicone Lid

Re-Play 12 fl oz Recycled Stainless Steel Cup - Denim

Nuby No Spill Super Spout Trainer Cup - Bright Green - 8oz

Nuby 4oz 2 Handle Silicone Cup with Spout Lid - Boy

PopYum Silicone Training Cup with Straw Lid, 2-Pack for Baby, Infant and Toddler, Tumbler, Sippy, handles, 5 ounce (purple, pink)

Thermos Baby 10 oz. Simple Pastels Insulated Stainless Steel Sippy Cup - Rose

Lulyboo 3pcs Silicone 3-in-1 Training Cup - White

Nuby 8oz Click-It-Handle Portable Drinkware Cup - 2pk

Nuby 6oz Mini Gripper Cup - Boy - 3pk

Nalgene Kid's Sustain 12 oz. Grip-N-Gulp Sippy Cup