--It is also available--works exactly the opposite from a traditional ab crunch machine.
--Rather than working your ab muscles from the top down, the Ab Coaster works
From the bottom up, helping you target those hard-to-reach lower abs.
--Just kneel on the comfortable carriage and pull your knees up.
--As you lift, the knee carriage glides along the biometrically designed curved track, engaging
Your lower abs first then the middle & upper region, giving a complete abdominal workout.
--The device also promotes core stabilization by isolating the abdominal region and virtually Eliminating any hip flexor involvement.

Technical Specfications:
Material: All Steel Construction
Technical Features: 5" Steel Rails, Polyurethene Rollers
Free-style Seat Movement Steel Bearings
Vinyl Covered Molded Foam Pads
Digital Workout Counter
3-Position Adjustable Seat Pad
Easy-Move Casters
Powder-Coat Finish
Ultra Glide Nylon Rollers
Weight Capacity: 136kg/300lb
Weight plate capacity: 10kig/20 lb.
Product size: L1, 300 x W660 x H125mm
Saddle seat size: W37 x L41cm
Track Length: 130cm