Lightweight Inflatable Back Pillow

Inflated: 40 × 35 × 12 cm (15.75 × 13.78 × 4.72 in); deflated & rolled: 14 × 6 cm (5.5 × 2.36 in); weight: ~150 g. Premium PVC flocking surface provides tactile comfort and resists creasing after repeated inflation/deflation cycles. Integrated non-return valve ensures zero air loss during inflation — each breath contributes directly to volume gain, achieving full firmness in under half a minute. The 75° ergonomic silhouette accommodates varying lumbar depths, and variable air volume allows real-time adaptation to sitting duration, clothing thickness, or fatigue level. Adjustable straps accommodate chairs with wide or narrow backrests — from ergonomic Herman Miller models to compact airline seats — with no tools or modifications required.