Broad compatibility: fits most bicycles including folding bikes, road bikes, and mountain bikes. Functions as a phone holder and a bike bag. Stable mounting: when securely attached to the front wheel area, it stays in place on rough roads. Also suitable for mounting under the saddle. Daily use protection: made from stylish, durable material with a sealed design to protect your items. Serves as a bike tool bag and a bike storage bag. Multifunctional storage: versatile enough to hold USB cables, keys, ID cards, money, and other small items. Works as a bike frame bag and bicycle storage bag. Use scenarios: - Daily commute: keep your phone, keys, and cash within easy reach and protected during rides. - Weekend rides or tours: extra space for tools and small gear without excess movement. - Short errands: quick access to essentials without unpacking a larger bag.