Instead of having a handle like a normal mug, this crimp pinch hold mug is sculpted to look like a rock surface and requires the drinker to pinch the hold, in a similar way to holding a rock handhold on a crag or indoor gym climbing wall. With this unique mug, you can strengthen your grip while drinking your coffee or tea. The Crimp Pinch Hold is designed to be lifted by anyone, regardless of how much climbing experience he has, but still requires a good pinch and therefore helps build strength in his fingers. Maybe you don't climb, but it would obviously be a great gift for climbers you know on special occasion, such as Christmas, Thankgiving, Anniversary, Birthday, Father's day. Features Handcrafted from high-quality glass by skilled artisans. Transparent, odorless, non-polluting, non-toxic and safe to use. Dishwasher safe and easy to clean. Product Details Set Includes: 1 Climber Mug Item Dimensions: Ø3.78" x 4.61" H Item Weight: 1.25 lb Capacity: 13.3 fl-oz.