For Prime Day Amazon is offering a whopping 43% discount on the Forerunner 255, bringing its price down to just $199 from its regular price of $349. This is the company’s best-selling product, and it has a 4.7 out of 5 rating and it can be purchased as a limited time offer that does not require a Prime membership.

Prime Day is an excellent time to find steep discounts in the sleep department.

Unique bottle-shaped design gives it a wide, stable base.