For coverage of wrists and forearms when shirt or abaya sleeves are too short or for when you will be lifting your arms a lot. AKA sleeve guards, gauntlets, extension sleeves, arm bands, arm covers, wrist guards, forearm covers.
Dickeys have been around for years and years and are popular in other categories of my website. Now they are popping up in Islamic clothing stores, too. They are a sleeveless, bottomless shirt that is meant to cover cleaveage, the upper chest, and maybe the neck area.