Works well on the ultra.This band looks great and the color is bright. I just wished they had the 45mm band in a smaller length for people with small wrists but want a large watch face.I absolutely love this band. It's a great color - the silicone is super soft and comfortable, it's very easy to adjust, and it's got a good grip where it stays on your wrist nicely. The breathable design is great for being active and reducing the amount of sweat on your wrist.I got the turquoise green/blue one and it's a great color - love it! Based on the quality of this band and how happy I am with it, I'm definitely ordering another in a different color. Highly recommend this band - it's great!I like how adjustable the fit is. This band works great when I’m doing dishes too!Love the light softer feel and yet just as durable will be ordering more I did order the 38 etc size because I thought the 42/44 was going to be longer in length and that would of been too long for meMy wife wanted something new and sporty for her Apple Watch. We ran across this Elaikement sport band so we gave it a shot. She loves it.The fit of the band is good on the Apple Watch. We had no problems installing it. The fit on her arm is also good. I posted pictures of it on the watch and on her arm. It’s a good looking band and she says it’s very comfortable. She loves the color and it’s easy to put on and off.If we had any criticism, it might be that the silicone is a little flimsier than the Apple branded bands. But we’ve noticed this from most sport bands. I didn’t see a reason to knock the review down a star for it, though.So many things are black. Once you put them down among all the other black things, or in a purse or bag, they are hard to find. The Elaikement Sport iWatch Bands Compatible for Apple Watch Band in YELLOW will be easy to find.Like all bands for the Apple Watch, the band easily goes on and off. It is attractive and comfortable to wear. It seems more secure than bands with the typical metal clip.I like this band. My Nike edition originally came with a black band that was starting to look worn. This white band with the same breathable holes throughout it is a great replacement. The contrasting black holes in the band juice up the look a little. It also seems generously long compared to the length of the original Apple band. The prong snaps easily into any hole securely. Nice product, Elaikement!