1. the product is not an official product rainbow loom contrary to suggest the product 2. very rough quality, and in any case much less than the real products rainbow loom: the elastic are of poor quality (broken, too small, etc ... The plastic box is full of guinguois and connects to the end evil, internal separations move and elastic mix, hooks twist easily, the machine is broken and badly trimmed elastic ... 3. elastic few choices: 1 floor striped bicolor, bicolor 1 floor inside / outside and single-colored, half transparent floor. Less than 30 varieties in all. By cons, a large amount of elastic of each variety. Too bad, I was hoping to find the basic colors (black, white in particular), which are most useful ... 4. the loom is stationary, while the true allows shifting the rangeées according to the desired patterns; we therefore can not achieve anything you want 5. Product comes from Singapore, and puts a full month to arrive (probably by boat ...) and is a little damaged by transport So I feel like I have done, because I absolutely wanted a real product rainbow loom which is always his quality, and I have not the colors I was looking ... But try to return a product in Singapore! I just equivalent to what is found in all markets, but are not cheaper.