The platform extender from Align-Pilates can also be used in conjunction with the mattress converter to make your reformer a mat work station. Generally, standing exercises can be done using the standard Anti-slip timber platform however many clients prefer the security of a larger standing area. The Platform extender can also be used at the pulley end of your Reformer to aid with postural positions in other exercises. Specifications Weight: 11 kg Dimensions (H x W x D): 41.14" x 23.62" x 3.43" (104.5 x 60 x 8.7 cm)