EQLEF Natural Bamboo Charcoal Office Chair Cushion Car Seat Cushion Anti-Skid Cushion-Black. This cushion features a Bamboo Charcoal Filler made of high-quality bamboo fiber with granular activated carbon inside to absorb sweat and keep you dry and comfortable. The anti-slip design with a hollow mesh-like fabric back ensures it stays in place. Bamboo charcoal's strong adsorption properties help eliminate odor, moisture, and reduce mold and bacteria, making it ideal for long periods of sitting. Its widely applicable size of 17.7*17.7 inches (45*45cm) fits most car seats and chairs. The breathable design with mesh vents makes it suitable for all-year-round use. Each purchase includes 1 seat cushion with a 12-month quality guarantee.