My daughter gets through these loom bands like there's no tomorrow and she commented that these ones did seem to break easier than other makes so possibly not as strong. Not all bands, just a higher percentage. Turned up quickly as described so no problem with the seller, it's the strength of the bands themselves that doesn't seem that great.
I bought these loom bands for my daughter, as this is the newest craze for young girls, and I wasn't disappointed as she is very happy with this product. They arrived in good time too, so I would recommend this company to everyone.