Rhinowalk RF164 For Brompton Folding Bicycle Ultralight Storage Bag(Black)1. Double zipper design on the top opening: it can be closed for storage or the base can be easily closed; 2. Bottom tightening design: the retractable drawstring can tighten the bottom to protect the car bag firmly; 3. Lightweight design: the car bag is made of lightweight material, can be rolled up for storage, small and light; 4. Storage design: after the car bag is put into the storage bag, it can be stuffed into the hollow beam to reduce the