The front without glue is the magnetic side

we are involved in many fun projects with designer magnets

til 300 gram

that is also possible

If the bicycle has a very rounded frame

Sy-i-magnet knap rund Ø26 mm., gul Tier1 The front without glue isMagnets designed for sewing into clothing, curtains, and similar items feature buttonholes for straightforward attachment. One unit contains two parts: one north and one south. Ordering 1 unit gives you 1 set, and ordering 10 units provides 10 sets. Generally, 5 button sets are adequate for a standard jacket or shirt, though preferences vary. This model is yellow. A yellow magnetic button would be a brilliant addition to a dress, bag, or backpack,