Stainless Steel Outer And Inner | Double Wall Construction For Insulation Of Hot Or Cold Liquids | Snap-On, Spill-Resistant Thumb-Slide Lid | Non-Slip Bottom | Meets FDA Requirements | BPA Free | Hand Wash Recommended (Remove Speaker Base Prior To Washing) | Features High Definition Bluetooth® 5.0 Wireless Technology | Simply Pair Your Handheld Device To Enjoy Dynamic Stereo Sound | Multi-Color Light Pulses To The Beat Of The Music | 450 mAh Lithium Polymer Battery Included | Pairs From Up To 32 Feet Away | Up To 5 Hours Of Play Time | Low Power Warning | Features A USB Output And Micro USB Input (Cord Included) | Works With Most Smart Phones And Audio Devices | The Bluetooth® word mark and logos are registered trademarks owned by the Bluetooth SIG, Inc. and any use of such marks by Hit Promotional Products®, Inc. is under license. Other trademarks and trade names are those of their respective owners.. Approximate Size: 8 1/4″ H , Imprint Area: Silk-Screen: 2 1/2″ W x 4″ H … Vertical Imprint: 2″ W x 5″ H … Wraparound: 5″ W x 4″ H (Silk-Screen Only) .See General Information For Details On Wraparound Imprint..Optional 4-Color Process: Standard: 2 1/2″ W x 3″ H … Large: 5″ W x 3″ H (Must Specify on PO).Optional Laser Engraved: 1 1/2″ W x 4″ H.Standard Imprint is Horizontal. For Vertical Imprint, Must Specify on PO. .