Our Authentic Poly Spots feature molded in yellow numbers that will not wear off EVER. Cheaper versions have painted numbers that can quickly wear off. Poly spots stick well to clean smooth surfaced floors. Not affected by the weather or water so they are great for outside use too. These 9 inch diameter spots are perfect for creating stations and very helpful with social distancing large groups of students. Conventiently sold in sets of 10 so you can get just the numbers you need. Alternately we offer a complete set of spots numbered 1-100.