A Flat sheet is simply a rectangular sheet and can be used as top or bottom sheet, while a fitted sheet has  four corners fitted with elastic (Kbamboo has all four sides fitted with elastic which allows more flexibility ), and also only used as a bottom sheet.They both come in a variety of bed sizes.

Fitted Sheets                                                      V                                     Flat Sheet

-Provide protection for your mattress.                                                      – Protection for both the fitted sheet and duvet.

– Are a snug fit for a smooth sleeping surface.                                         -Acts as a barrier for skin against common irritants.

-Easily removed for cleaning.                                                                       – Offers even further temperature control while sleeping, especially in warmer weather instead of a duvet.

So Which Is Better ?

Honestly it comes down to personal preference, which is subjective, comfort level for both you and your partner(where applicable).

The average person spends 33% of their time on the planet sleeping or resting and this should be done in comfort, and this is why you should choose based on what personally suits you!!!