The product is a pair of CST Ouster 29" x 2.25" EPS puncture protection folding mountain bike tyres. These tyres are designed specifically for mountain bikes and offer excellent puncture resistance. Made of durable rubber and featuring a foldable design, they are easy to transport and store when not in use. The black color adds a sleek look to the bike, while the CST brand ensures quality and reliability. Perfect for cyclists looking for reliable and high-performance tyres for their mountain biking adventures.