The Adjustable Adult Platform Walker is a platform-style walker with a padded support platform and a healthcare-grade PVC frame reinforced at all stress points. Platform Walker by MJM, Adult Platform Walkers / Support Walkers Part # 07A Platform Walker by MJM, Aduld Table height is 38" to. Previous Next 1 of 8 Types of walkers. This walker is similar to a foot-propelled scooter, but it has a platform for resting your knee. Types of walkers;.