The adidas UltraBoost 21 ‘Black Active Teal’ adds subtle pops of color to a holistic running shoe that blends lightweight support, responsiveness and comfort. The upper is constructed from breathable Primeknit, made in part with recycled materials that include Parley Ocean Plastic. The monotone finish up top is disrupted by a teal-colored heel counter and fuchsia adidas branding on the tongue. The same contrasting hues enliven the full-length Boost midsole and Continental rubber outsole.
The adidas UltraBoost 21 ‘Black Active Teal’ adds subtle pops of color to a holistic running shoe that blends lightweight support, responsiveness and comfort. The upper is constructed from breathable Primeknit, made in part with recycled materials that include Parley Ocean Plastic. The monotone finish up top is disrupted by a teal-colored heel counter and fuchsia adidas branding on the tongue. The same contrasting hues enliven the full-length Boost midsole and Continental rubber outsole.
in 2 offers
last seen 9 May 2026
The lowest price we last saw for Adidas Ultraboost 21 'Black Active Teal' FZ1921 was $213.00 at StockX, compared across 2 retailers (last seen 9 May 2026). Prices may have changed since.
The all-time low we recorded was $144.00 on 15 Dec 2024.
Prices last updated 9 May 2026.
Adidas Ultraboost 21 'Black Active Teal' FZ1921
The adidas UltraBoost 21 ‘Black Active Teal’ adds subtle pops of color to a holistic running shoe that blends lightweight support, responsiveness and comfort. The upper is constructed from breathable Primeknit, made in part with recycled materials that include Parley Ocean Plastic. The monotone finish up top is disrupted by a teal-colored heel counter and fuchsia adidas branding on the tongue. The same contrasting hues enliven the full-length Boost midsole and Continental rubber outsole.
The adidas UltraBoost 21 ‘Black Active Teal’ adds subtle pops of color to a holistic running shoe that blends lightweight support, responsiveness and comfort. The upper is constructed from breathable Primeknit, made in part with recycled materials that include Parley Ocean Plastic. The monotone finish up top is disrupted by a teal-colored heel counter and fuchsia adidas branding on the tongue. The same contrasting hues enliven the full-length Boost midsole and Continental rubber outsole.
Last updated at 09/05/2026 13:22:08
adidas Ultra Boost 21 Carbon Active Teal
Delivery $34.95
adidas UltraBoost 21 'Black Active Teal' | Men's Size 7.5
Delivery between 11–18 May $25
originally posted on finishline.com
I really liked the Ultraboost 20s and bought 2 pairs of the Ultraboost 21 to add in my rotation. I work out 4-5 days a week, doing cardio and weights. And these feel really good on my feet. I am not an avid runner, but as advertised, the additional boost feels more responsive and more cushioned. If you liked the Ultraboost 20s, you'll like the upgrade on the Ultraboost 21s. I am a heavy set guy, I've lost over 60 lbs in the last year, and have put my Ultraboosts through the test...
originally posted on finishline.com
This sneaker is super comfortable. You feel a supportive sole in the shoe while you run. It stretches to fit your foot and has a snug secure fit.
originally posted on finishline.com
I purchased the 21 Boost based on previous experience with the 20's. While these are very different in looks, they provide the same comfort. I'm not a runner, but the cushion in these really help alleviate back pain during long time use. The color way is amazing, I'm a fan of the small details in the upper of the shoe with small touches of the accent color throughout. If you're looking to buy a pair but find yourself on the fence, make the jump. Your feet and back will thank you and you'll get plenty of compliments as an added bonus.
adidas Ultra Boost 21 Carbon Active Teal
Delivery $34.95
adidas UltraBoost 21 'Black Active Teal' | Men's Size 7.5
Delivery between 11–18 May $25
I really liked the Ultraboost 20s and bought 2 pairs of the Ultraboost 21 to add in my rotation. I work out 4-5 days a week, doing cardio and weights. And these feel really good on my feet. I am not an avid runner, but as advertised, the additional boost feels more responsive and more cushioned. If you liked the Ultraboost 20s, you'll like the upgrade on the Ultraboost 21s. I am a heavy set guy, I've lost over 60 lbs in the last year, and have put my Ultraboosts through the test...
This sneaker is super comfortable. You feel a supportive sole in the shoe while you run. It stretches to fit your foot and has a snug secure fit.
I purchased the 21 Boost based on previous experience with the 20's. While these are very different in looks, they provide the same comfort. I'm not a runner, but the cushion in these really help alleviate back pain during long time use. The color way is amazing, I'm a fan of the small details in the upper of the shoe with small touches of the accent color throughout. If you're looking to buy a pair but find yourself on the fence, make the jump. Your feet and back will thank you and you'll get plenty of compliments as an added bonus.
Adidas Ultraboost 20's are still my favorite shoe. But I love how the 21's have upgraded the support in the sole, and have tilted the shoe forward a bit to really propel you forward.
Looks good ! Thanks
All out red looks exteemely sharp! The extended boost sole looks sharp and provides additional stability. Upper is well made with very little evidence of stich/glue lines. Can wear casually or for running but sole is not flat or firm enough for most gym leg-day exercises. We ordered a full size down as the shoe runs noticably large.
I'm a fan of ultra boost tech, have had every model and decided to buy this one on sale. When it first arrived I was super excited to try them on. Out the box, my first impression was that it seemed to follow previous models and was made from solid materials, once on foot my feelings changed. Super comfortable, light weight but LONG. Mens size 8 looked more like a 10. The silhouette was more like a clown shoe paired with a huge heel and I just couldn't keep them.
Lots of cousin on the heel though not too spongy and not too stiff either. Could use a bit more cushion in the mid sole though in comparison with the heel... not much there.. also upper is a tad tight. Overall not bad. Ran 10k a day all week in these. 7.5/10
The shoe is very comfortable. Great cushion. Should be good for running or working out.
The shoes themselves are well designed and comfortable. However, there're too many signs of worn and the back of the shoes are very dirty. Very disappointed and have to return.
