Bottle Holder and GoPro camera mount for BROMPTON Saddle | eBay
Trigo GoPro Garmin Bottle Cage Mount Adaptor for Brompton Bicycle Orig – Fantastic4Toys
Bottle Mount Adapter Connector DIY Universal Tripod Cap Tools Flexible Practical Attachment Water Holder Camera Monopod Diving Surfing for GOPRO(Black) : Amazon.in: Electronics
Generic Compatible with GoPro 10/9/8 Tripod Bottle Holder Adapter DIY Underwater Diving Surfing Practical Connector Compatible with Insta360 Sports Camera Monopod : Amazon.in: Electronics
Tacx Bottle Cage Mount + The Mudguard.- YES, The GoPro Saddle Mount - NO. - YouTube