SERFAS Small Black Speed Saddle Bag (LT-1BK)

Expandable design with bottom zipper; Velcro Strap Mounting System to seat post and saddle rails; Reflective bag trim; Internal key ring storage; Contoured bag profile; Rear facing tail light attachment loop; Size: Small (53 cubic inch Storage Capacity); Dimensions: 5" x 3.25" x 3.25"