The ball is declared as gymnastic. I needed a daughter for rhythmic gymnastics. no!!! Not suitable! It is very light compared to gymnastic. while the first year, I do not want to buy professional for 2-3000 rubles. I saw many questions from buyers from different sellers, whether it is suitable for thin. gymnastics, but no seller found an answer. now there will be another light ball for the game, or maybe I will gather and start doing fitness (when squeezing it seems to be strong). Delivery is fast, 3 weeks. You can pack better, just in a thin package.