Adidas added more Boost to the Ultraboost 21 Running Shoe to give us maximum cushioning and effortless energy return. The twenty iterations before this version were already incredibly comfortable, but the extra foam and fresh upper feel like a whole new dream. The supportive, mostly-mesh upper grants a secure fit that's intended for comfort through the miles.
Adidas added more Boost to the Ultraboost 21 Running Shoe to give us maximum cushioning and effortless energy return. The twenty iterations before this version were already incredibly comfortable, but the extra foam and fresh upper feel like a whole new dream. The supportive, mostly-mesh upper grants a secure fit that's intended for comfort through the miles.
Adidas added more Boost to the Ultraboost 21 Running Shoe to give us maximum cushioning and effortless energy return. The twenty iterations before this version were already incredibly comfortable, but the extra foam and fresh upper feel like a whole new dream. The supportive, mostly-mesh upper grants a secure fit that's intended for comfort through the miles.
Adidas added more Boost to the Ultraboost 21 Running Shoe to give us maximum cushioning and effortless energy return. The twenty iterations before this version were already incredibly comfortable, but the extra foam and fresh upper feel like a whole new dream. The supportive, mostly-mesh upper grants a secure fit that's intended for comfort through the miles.
Last updated at 05/15/2026 06:45:30
Adidas Running Women Ultraboost 21 Black White FY0402, 7.5
Delivery $81.19
Adidas Running Women Ultraboost 21 Black White FY0402 7.5
Delivery $81.19
adidas Ultra Boost 21 Core Black (Women's)
Delivery $45.44
adidas Wmns UltraBoost 21 'Core Black' | Women's Size 7.5
Delivery between 17–24 May $25
originally posted on Academy Sports + Outdoors
I have very high arches, plantar fasciitis and gets shin splints. I have tried every pair of “high arch” podiatrist recommended tennis shoes. These are the best! Better for me than ASICS Kayano, Brooks Ghost and Glycerin, and Nike Air Pegasus (and others). I’m soooo glad I found these and on sale! The arch is awesome and the tie box is wide.
originally posted on finishline.com
Love these! I've bought Ultraboosts every year. They never cease to get better. Great for running or just a regular day at the gym. I also use mine for just everyday living. Super comfortable and great arch support. It's also the perfect mauve pink!
originally posted on roadrunnersports.com
The Ultra Boost 21 has helped me train for 2 marathons with little injury. They are heavy, but worth it for the cushion they provide - also feel great when you put on other shoes because you are used to training in these! The Continental Tread helps me feel safe on wet and snowy grounds too.
| Size Origin | US |
| Style Type | Running Shoes |
| Specialty | Textured |
Adidas Running Women Ultraboost 21 Black White FY0402, 7.5
Delivery $81.19
Adidas Running Women Ultraboost 21 Black White FY0402 7.5
Delivery $81.19
adidas Ultra Boost 21 Core Black (Women's)
Delivery $45.44
adidas Wmns UltraBoost 21 'Core Black' | Women's Size 7.5
Delivery between 17–24 May $25
I have very high arches, plantar fasciitis and gets shin splints. I have tried every pair of “high arch” podiatrist recommended tennis shoes. These are the best! Better for me than ASICS Kayano, Brooks Ghost and Glycerin, and Nike Air Pegasus (and others). I’m soooo glad I found these and on sale! The arch is awesome and the tie box is wide.
Love these! I've bought Ultraboosts every year. They never cease to get better. Great for running or just a regular day at the gym. I also use mine for just everyday living. Super comfortable and great arch support. It's also the perfect mauve pink!
The Ultra Boost 21 has helped me train for 2 marathons with little injury. They are heavy, but worth it for the cushion they provide - also feel great when you put on other shoes because you are used to training in these! The Continental Tread helps me feel safe on wet and snowy grounds too.
I took a chance with the sizing but fitted perfectly. I'm a size 5 shoe but always go for 5.5 size in trainers. I only run up to 3 times a week short distances of 5ks. So I can't comment about longer runs. But they do the job for me. Fit perfectly round my ankles.
Gave the ultra boost 21 a try, loved the older model, but why companies change the fit frustrates me. The size guide said to go a size up - I disagree, my true size is almost too big and it has a larger gappy toe box which is bigger than older models. The heel cushion on one shoe rubs and is malformed after 2 runs - so disappointed. This will become an expensive errand running shoe now.
This was my first pair of ultraboost. I've been shopping for a great shoe that looks and feel great and this was the one. I love the color and the shoe feels so amazing. I work in retail so I'm on my feet all day but with this shoe I feel less fatigued than with my previous work shoe. I would recommend going up half a sz because of the prime knit but otherwise the shoe is perfect.
This is a very functional shoe and looks great. Got this for walking and light jogs and have to say it is thee most comfortable shoe I’ve worn. My only frame of reference are under armour running shoes and various lifestyle trainers so you don’t have to take my word for it.I went half size up, first wear was a little tight but after wearing a few times I wish I had gone true to size. That primeknit makes them so easy to break in.Very comfy and supportive, when my feet start to get tired I can sort of adjust my stepping and feels like I’m walking on clouds. Basically all parts of the shoe are comfortable so it doesn’t matter if you’re heel stepping, toe stepping, side stepping -this shoe with support you and bounce back.
This shoes help me so much with my heel spur and facitisis. The own quite a few sneakers and my orthopedic doctor recommend these. Yes the shoe is pricey but being on your feet for 8hrs, it worth every penny. I even bought one in another color. your going to need to size down down by one size, they run big for women.
Purchased a UK5, despite being a UK4.5 and it still felt like it ran surprisingly small. Might be due to it being new or it's that compressive flyknit upper- but it was like I was wearing climbing shoes which are deliberately tight fitted. Wasn't too pleased and had to send it back despite wanting to like it. Colour wasn't actually bad in person either and was super squishy. Maybe just wasn't for me.
Absolutely love these ultra boost adidas they are literally worth the cost I feel like they are a better investment from when I spent hundreds of dollars on gym memberships and I never go. Since I got my ultra boost I felt like my body is getting toner! I am a size 7WIDE and I got 7.5 Regular because they don't carry wide, but I could of done 7Regular and the fit would of been better, but is okay! I have thick socks to help with the the remainder .5 to fill in! I am 5'5 175lbs
| Size Origin | US |
| Style Type | Running Shoes |
| Specialty | Textured |
