Use it for warming up at the beginning of your grip workout, for active rest on your off days, and for reducing tension throughout the day—everyday. The IronMind Green EGG is softer than the IronMind Blue EGG, with more give for a wider dynamic range when you squeeze it, and the IronMind Blue EGG has a firmer feeling. Made in the USA of a 21st century polymer that feels great to squeeze, with just the right amount of give. Measures 3" long and 7-1/4" around the widest part, and the IronMind EGG's shape fits naturally in the palm of your hand, while providing a multitude of options in terms of training angles. The perfect complement to your IronMind grippers (Captains of Crush, Zenith, IMTUG, Left-Turn), and also serves admirably as an all-purpose training tool for your crushing grip.