Express Internet Solutions offers Karman ergonomic wheelchairs that are made of the highest quality materials. The comfort is unbeatable in these Ergonomic Wheelchairs. These ergonomic wheelchairs are lightweight and compact. The upholstery is equipped with AEGIS antibiotic technology odor/ stain/deterioration control. The ergonomic wheelchairs have a wider arm pad providing comfort and support. All models come equipped with 7" x 1" polyurethane wheels.