Playtri Serfas Speed Bag (Saddle Bag) Shimano 105 In summary

In summary

No greasy residue

the nose is 55mm wide so there is no need to use “zip ties” or other adaptions to find the all day comfort  on this saddle

moves air through trainer to keep it cool

strong beam to help you see and be seen

Playtri Serfas Speed Bag (Saddle Bag) Shimano 105 In summaryUniversal Fit Velcro Strap Mounting System To Seat Post and Saddle Rails Reflective Bag Trim Internal Key Ring Storage 48 Cubic Inch Capacity Contoured Bag Profile Rear Facing Tail Light Attachment Loop Features: Reflective Trim Key Ring Storage Universal Fit Velcro Strap Mounting System To Seat Post and Saddle Rails 48 Cubic Inch Capacity Contoured Bag Profile Rear Facing Tail Light Attachment Loop Specs: Size: 5 x 3. 5 x 2. 75 48 Cubic Inches