Features:

• Designed to easily mount to most seat style and seatposts
• Expandable design can hold flat repair tools, keys, phone, and other essentials
• Black nylon exterior with reflector tape at back
• Two compartments with red-accented zippers
• Weather resistant, durable construction

Editor Reviews:

Product Description:
Bell, Stow Away Seat Storage Bag, "Tail Gate" Opening Allows Easy Access, Easily Mounts To All Seat Styles & Seat Posts, Securely Holds Flat Repair Tools, Keys, Phone, Cash, Etc., Reflective Flasher Strap, Weather Resistant, Durable Construction.

Rating : - bicycle seat bag
I didn't like this item, because the strap won't stay fastened, and, it's too small.