AmazonBasics Strap-On Wedge Saddle Bag for Cycling Large cycling wedge saddle bag easily connects under bike seat and to seat post Reflective safety strip for increased visibility; tail-light loop for optional rear light (not included) Weather-resistant material helps protect stored items; durable zipper closure Holds several essentials like a phone, wallet, small bike pump, spare tube, cable lock, and L-wrench set (not included) Measures approximately 5 by 6 by 8 inches