Adventure Light Guardian Expedition Green Waterproof Saftety Emergency 2-Pack

Bought these for my 2 labradors who have had several so called waterproof lights before. Bought these on the recommendation of a fellow dog owner. THEY ARE WATERPROOF! Both dogs have been swimming in them lots of times and they're still working! Only slight criticism is they slip about on their collars so tend to end up pointing at the ground but the light is so bright you can still see it from a long distance!

Very visible for swimming.