you cant pour from an empty cup

Blair Glass Travel Infuser Mug by Pinky Up

Zak Designs 25oz Minnie Mouse SAN Straw Tumbler with Topper Black/Pink

Stanley 14 oz Stainless Steel Ice Flow Flip Straw Tumbler Smokey Taupe

Frost Buddy ToGo Buddy 30oz Stainless Steel Vacuum Insulated Tumbler – Iced Coffee Sleeve, Travel Mug for Hot & Cold Drinks (Royal Glitz)

Simple Modern 40oz Trek Checkmate Straw Tumbler Red/White: Stainless Steel, Dishwasher-Safe, Cold Beverages, All Ages

Copco Cone Double Wall Insulated Coffee Mug with Handle, Durable & BPA-Free Reusable Plastic, 16 oz.

HydroJug Traveler - Water Bottle with Handle & Flip Straw - Leak Resistant Tumbler, Insulated, Stainless Steel & Rubber Base

Silver Buffalo Bratz Carnival Cup With Lid and Straw Topper Charm | Holds 24 Ounces

Silver Buffalo Disney Hercules Double-Walled Tumbler With Lid and Straw | Holds 20 Ounces

HydroJug Sport Jug 64oz – Insulated Stainless Steel Water Jug with Flip Straw & Pour Spout, Leakproof

Stanley 30 oz Stainless Steel H2.0 Flowstate Quencher Tumbler Dark Blossom Tile

Stanley 30 oz Stainless Steel H2.0 FlowState Quencher Tumbler Metallic Shimmer

100 Pack Clear Plastic Cold Cups with Flat Lids and Individually Wrapped White Straws

Hydrapeak Sport Stainless Steel Insulated Water Bottle With Spill Proof Straw Lid And Matching Rubber Sport Boot

NCAA Miami Hurricanes Colossus Travel Mug with Victory Graphics - 40oz

Host Cooling Wine Freeze Cup with Lid, Set of 2

Stanley 30 oz St ainless Steel IceFlow Flip Straw Tumbler Honey Talks - e.l.f