Hijab-ista is a US-based website selling everything from scarves to accessories to clothing. I was recently sent the Shimmer Hijab in silver and the Full Length Sleeves in grey to review.
The full length sleeves are similar to a shrug, but are designed to be worn underneath tops or dresses with short or sheer sleeves. They also come in a large range of colours and are one size fits all. The fabric is very soft and lightweight and the sleeves are not too tight. They are a pretty neat solution, and a good alternative to layering an entire long-sleeve t-shirt, especially in hot weather. However the sleeves obviously can't be worn underneath sleeveless tops, as you have gaps at the side, or tops with a low neckline, so the uses are a little limited. I would also definitely advise that these are only worn underneath another top, rather than over it, since they are very short in the back and a shrug or jacket would be a better option. Overall they are a handy item to have if you need some arm coverage, and are comfortable and easy to wear.