The Dynamic A4 Is The Perfect Application For Tight Spaces And Minimal Headroom Applications. Standard Features Include: High-Density Injection Molded Foam, Ergonomical Design, Harness Belt Capability, Integrated Shoulder, Kidney And Thigh Support, Leatherette High Wear Patches, And A Fully Adjustable Seat Back With A Flip Forward Fingertip Controlled Lever For Rear Access. The A4 Is Extra Aggressive In The Kidney Area And Will Fit Up To A 34" Waist. The Wide Version (Black Only) Will Fit Up To 40" Waist

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