Hey cyclists, don't let a flat tire ruin your ride! These Schwalbe SV6 inner tubes are exactly what you need for your 20-inch wheels. They're designed to fit tire sizes from 1.10 (that's 1 1/8) up to 1.50 inches wide, making them super versatile for different bike types. The 40mm Presta valve is perfect for most rims and makes inflation easy whether you're using a hand pump or air compressor. What we really love about Schwalbe tubes is how well they hold air pressure - thanks to their top-quality materials, you won't be pumping them up every other day. Each package contains two tubes, so you've got a spare ready to go when you need it. Plus, every tube is 100% recyclable, which is awesome for us eco-conscious riders. These are genuine Schwalbe quality, meaning they're reliable, durable, and made to last through plenty of rides. Perfect for BMX bikes, folding bikes, or any bicycle with 20-inch wheels - keep a set in your garage or take them with you on rides for that peace of mind that comes from being prepared for whatever the road throws at you!