My backpack & most of my clothes are black. This makes black rubber pinbacks very hard to see so they fall off frequently without my noticing. Luckily, I haven’t lost any pins yet. To keep it that way, I thought ordering a pack of white pinbacks would be wise. They’ve been working beautifully. I keep them in the little bag they were delivered in so I can replace any that fall off right away. So far only lost one. I’ll definitely be buying more from this shop as my pin collection grows. Thanks!