AS400 Pressure Relief Cushion

£249.99

AS400 Pressure Relief Cushion - High-Support Breathable Seating

Advanced pressure relief cushion designed for extended wheelchair use, office chairs, car seats and long periods of sitting.

Developed through dedicated research and built around Airospring’s patented high-airflow 3XD™ fabric, the AS400 provides reliable pressure distribution, postural support and all-day comfort. Suitable for a wide range of users who need dependable cushioning and breathable performance. 


Why it’s different

  • Purpose-built pressure relief - profiled design with a cut-out for the ischial tuberosities (ITs) that helps spread pressure down the thigh sections.
  • High-airflow comfort - patented 3XD™ fabric promotes airflow and moisture dissipation, reducing heat build-up common with dense foams or gels.
  • Responsive support - the material adapts as you move, conforming to your position for more consistent support.
  • Stable seating - integrated abductors and adductors help keep the legs aligned and stable.
  • Lightweight yet tough - at around 850 g, it’s much lighter than many comparable cushions on the market.
  • Washable and practical - suitable for machine washing at 40 °C for ongoing freshness.

Sizes & Specs

Features Details 
Dimensions Approx. 45 × 45 cm
Thickness Approx. 10 cm
Material 3XD™ Spacer Fabric (100% polyester)
Cover Breathable removeable cover
Weight capacity Supports up to approx. 160 kg
Weight Approx. 850 g
Made in UK

Engineered for users needing dependable pressure redistribution and airflow during prolonged sitting.


Who it’s for

  • Wheelchair users who sit for extended periods and require reliable pressure distribution.
  • Drivers, commuters and office workers who need all-day seating comfort.
  • Anyone seeking a breathable, washable cushion with responsive support.
  • People looking for more postural stability and pressure relief than standard seat pads or foam cushions provide.

Clinically Informed Design

The AS400 was developed following three years of research, incorporating insights from pressure mapping and postural support principles to enhance comfort for longer seating durations. Its use of patented 3XD™ fabric allows high airflow and moisture dissipation while providing consistent support across the seating surface.


Product Video



Complete Your Support Setup

Pair with the AS45 Back Support Cushion to improve overall posture and spinal comfort, or consider the AS200 Pressure Relief Cushion for a lighter-duty pressure management option.