Twister 4-piece calendar set is modern organizational wall art. Each month is a separate piece; and each piece is a fresh new take on a retro design. Arrange these wall decals however fits your space best and enjoy the beauty and convenience of this dry-erase peel andamp; stick wallpops calendar. Twister 4 piece calendar sets contain 4 - 13in x 13in sheets and include a dry-erase pen. Twister 4 piece calendar sets are repositionable and totally removable.