Additional Details ------------------------------ Product description: This is a replacement frame (without the bag!). Suitable for the Brompton T-Bag, C-Bag or folding basket. It is removable on the T (or Touring), C (was originally Carradice we think) and front basket The front carrier frame assembly slips into the back of the T bag, C bag and front basket to allow it to be attached to the front carrier block To remove the frame, undo the two velcro straps at the bottom of the bag which hold th frame in place and slide out (pull down towards the bottom) - the frame can be very tight in the bag This is a replacement frame only - if you have damaged / lost yours 400mm is the overall width of the frame 300mm is the height of the frame