We've added a new training product that I am absolutely obsessed with. I looked all over for a simple, portable hand strengthener and found it in these silicone donuts. These come in a package with 3 strengths - light, medium and hard. Each strength is picked specifically for a climber. Green is an easy warm up, Red is the strength builder and Black is the toughest for at your limit climbing. Add a set to an order today!