Sequential Compression Circulator Digital All in one Staircases With detachable full arms & Style:1 Pair (Left & Right) With detachable full arms & ELR * Steel spoke wheels are strong and maintenance free * Carbon steel frame with TRIPLE coated chrome for an attractive chip proof maintainable finish * Reinforced steel gussets at all weight bearing points provide additional strength * Durable reinforced nylon upholstery * Extra large padded armrests provide comfort and support * Steel spoke wheels are strong and maintenance free * Precision sealed wheel bearings in front and rear ensure long lasting performance and reliability * Extra large heavy duty aluminum footplates provide maximum support are attractive and crack proof * Mattress And Pump Come With A 2 year Warranty * Model No Gradient Sequential Peristaltic Non Sequential DVT Arterial Intensive Chamber Massage (Foot Ankle Calf Thigh) Inflation (5 24 sec) & Deflation (0 45 sec) time Adjustable Pressure 20