The SNAPSEAL Insulated Stainless Steel Travel Mug with Grip, 20 oz, keeps drinks hot up to 7 hours or cold up to 18 thanks to THERMALOCK double-wall vacuum insulation. The SNAPSEAL Insulated Stainless Steel Travel Mug with Grip, 20 oz, keeps drinks hot up to 7 hours or cold up to 18 thanks to THERMALOCK double-wall vacuum insulation. The one-piece SNAPSEAL lid allows for one-handed drinking with no lids or caps to remove or misplace and is leak-proof when closed. Plus, a subtly textured grip offers a secure hold.