I bought with a coupon of the seller for 9 rubles, purely for a sample. The gum, of course, is such a... No resistance, from the word at all. I understand that this is a unit, but it should not be so weak, the stationery bands are more tight... With her on the twine you can sit down and not feel its presence on your feet. The real score corresponds to the number of stars on this thing, but I will not spoil the rating. The goods came, came quickly (2 weeks to the Moscow region) and almost for nothing