Based on the search results, here are some of the top-selling items on Amazon and the reasons behind their popularity:

1. Food Scale: A handy kitchen tool that allows for precise measurements while preparing meals. It has a high rating, a large number of reviews, and a perfect listing health score .
2. Water Bottle Set: Designed to keep kids hydrated during warm days, this product has gained popularity due to its versatility and positive customer reviews .
3. Hydrating Serum: The #1 best seller in Beauty & Personal Care, this product has a high rating, a large number of customer reviews, and consistently increasing sales
4. Hair and Body Fragrance Mist: This refreshing fragrance mist has gained popularity among customers, as reflected in its high rating, numerous reviews, and a good listing health score
5. Cleaning Cloth: A useful product, especially for car owners who want to keep their vehicles clean. It has a high rating, a growing number of customer reviews, and increasing monthly sales
6. Car Trash Can: Essential for long car trips, this product has gained popularity due to its practical design, high rating, and a good listing health score
7. Comfortable T-Shirt: A versatile t-shirt suitable for various occasions, including lazy weekends. It has a high rating and an impressive listing health score .
8. Eclipse Glasses: With the occurrence of a once-in-a-lifetime eclipse, these glasses have become popular among customers. They have a high rating, an optimized listing, and are associated with a widespread event
9. Car Mirror Decals: Customers have taken to customizing the inside of their cars, particularly their mirrors, with decals. This product has gained popularity due to its high rating and a good listing health score .
10. Black Obsidian Bead Bracelet: A unique bracelet suitable for both men and women, this item has experienced a fantastic upward sales trend. It offers different variations and has an impressive health score .

These are just a few examples of the top-selling items on Amazon. The reasons behind their popularity include positive customer reviews, high ratings, practicality, and association with seasonal events or trends.