NB3DDesigns Universal Adapter System
Additional interchangeable tops sold separately here: NB3DDesigns Universal Adapter Additional Tops Technical Specifications: - Expands from 2.75 inches to 4 inches - Four points of rubber contact with cup holder, totaling 27cm squared surface area - Made of PETG plastic, Neoprene rubber Variation Dimensions:Nalgene top inner diameter: 92.5mmHydroflask (no boot) top inner diameter: 91mmHydroflask (boot) top inner diameter: 95mmYeti 14oz Rambler Mug top inner diameter: 102mmYeti 36oz Rambler Bottle top inner diameter: 95.5mmYeti 46oz Rambler Bottle top inner diameter: 102mm Disclaimers: This product is 3d printed and can have minor visual defects/blemishes from the manufacturing process. These imperfections will NOT affect the function of the product.