Flex Reusable Disc Flex has been in the menstrual-disc space for a while now, but the popular discs have been disposable — until now. The new and more sustainable Flex Reusable Disc ($35) can be washed and used again during your entire period — and for years after. Like some of the other discs on this list, it can be worn for up to 12 hours at a time and during sex. Image Source: flexfits.com Flex Reusable Disc $35 from flexfits.com Buy Now