Extend your reformer with the addition of the mattress converter for your Align-Pilates M*-Series reformers, which must be used in conjunction with the Platform Extender available here, to convert your reformer into a completely flatbed. The fully flatbed can be used in conjunction with the Half Cadillac to add additional repertoire, or as a matwork area. By adding this extra option to your reformer, it allows you to conveniently change the purpose of use of your reformer for clients, or at home. Increase the versatility of your Pilates studio space with this mattress converter! Compatible with M*-Series reformers, except the M1. We also have Mattress Converters for A-Series and C-Series.