Body By Jake - Crunch Core Kit Ultimate Abs Body By Jake Crunch Core Kit helps give you Ultimate Abs. Nothing delivers fat-burning in the midsection like the classic crunch, and with the Crunch Core Kit you get what you need to make every sit-up count. The ultra-comfortable head support and foot anchor straps optimize your form so you can achieve the lean, cut abs you're looking for. Strengthen Core Develop Proper Sit Up Form Increase Efficiency Features Neck Support strap Maintains Neutral Alignment Comfortable Ergonomic Design Foot Strap Anchors Feet Attaches Under Any Door Padded For Comfort Benefits Improved Form Strengthen Core Including Abs, Back and Obliques Increase Efficiency of Sit-Up Body By Jake's PassionAt Body By Jake, their passion is people. Through inspiration, motivation, and innovation, they give people of every generation the means and the will to believe in themselves and achieve healthy, rewarding lives. They deliver this commitment with the highest integrity and ethical standards, and they measure their success by the loyalty and trust each person places in us. Body By Jake CompanyWith a keen sense for the fitness trends of tomorrow and as a leader in inspiration and motivation, Body by Jake has carved a unique position in the world of health, inspiring millions to get fit, while achieving 20 years of satisfying consumer demand with innovative health and fitness products. Formed in 1990, to capitalize on Jake Steinfeld's renowned reputation, Body by Jake's name is an identity recognized by more than 150 million Americans who associate the trademark and Jake's personality with quality, fitness, health, a Don't Quit! attitude. Body by Jake has emerged as a leader in the home fitness area with some of the most successful health and fitness products, and has received an impressive response from over 2.5 million customers.