Oswerpon 21" Wide Heated Massage Stadium Seats for Bleachers with Back Support, Portable Stadium Chair with Armrest, for Outdoor（Without Battery)

Oswerpon This USB-powered stadium seat delivers 3 heat levels (high/medium/low) reaching 130°F max (requires 5V3A+ power bank, not included), plus a 6-level back massage with 3 vibration intensities and 2 modes per level to ease fatigue and boost circulation.Dual securement—a bottom strap and two under-seat hooks—keeps it firmly anchored on bleachers, while the waterproof polyester and 600D Oxford cloth surface, combined with a PVC leather base with raised granules, ensures weather resistance, traction, and easy cleaning. The durable frame supports long-term use across various weights.