If you want streamline then I can recommend the G-Form protection…they do come in all-black rather than the ghastly yellow featured on the link but the yellow makes it easier to see what they’re like. They’re weirdly a bit like a pair of sleeves that you pull up your arm. The tops are covered by a normal T-Shirt sleeve and the bottom comes just above the wrist. They’re very thin and flexible but the material reacts to impacts by becoming solid (and increasing in volume I think). Once you put them on you completely forget they’re there. Most of my local bike shops sold them and you do need to get the right size. Down side is they’re quite pricey 
Check out my learning journal for pictures of mine in action.
UL