The adidas Ultra Boost 21 Solar Yellow takes the Ultra Boost 21 silhouette and applies a vibrant colorway of Solar Yellow with Screaming Pink details. The upper is made of breathable PrimeKnit that conforms to the foot's shape and adds durability. However, part of this PrimeKnit is made of PrimeBlue thread, which is made from recycled materials, including plastics found in the oceans. The laces wind through overlays made of a synthetic material that forms the 3-Stripes logo. The sneaker boasts a Boost midsole, as well as adidas’ Torsion System, which increases energy return. Finally, a heel counter supports the heel, while the outsole is made of rubber. The branding details are minimal, but include a panel near the heel that reads 'ULTRABOOST.' Something our experts at StockX like is the Screaming Pink accents on the midsole and outsole. The adidas Ultra Boost 21 Solar Yellow was released on January 28th, 2021, and sold at $180.
The adidas Ultra Boost 21 Solar Yellow takes the Ultra Boost 21 silhouette and applies a vibrant colorway of Solar Yellow with Screaming Pink details. The upper is made of breathable PrimeKnit that conforms to the foot's shape and adds durability. However, part of this PrimeKnit is made of PrimeBlue thread, which is made from recycled materials, including plastics found in the oceans. The laces wind through overlays made of a synthetic material that forms the 3-Stripes logo. The sneaker boasts a Boost midsole, as well as adidas’ Torsion System, which increases energy return. Finally, a heel counter supports the heel, while the outsole is made of rubber. The branding details are minimal, but include a panel near the heel that reads 'ULTRABOOST.' Something our experts at StockX like is the Screaming Pink accents on the midsole and outsole. The adidas Ultra Boost 21 Solar Yellow was released on January 28th, 2021, and sold at $180.
in 1 offers
The lowest price for Adidas Ultra Boost 21 Solar Yellow right now is $814.00 at StockX.
The all-time low was $262.00 on 13 Mar 2026 — today's price is 211% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 5 May 2026.
Adidas Ultra Boost 21 Solar Yellow
The adidas Ultra Boost 21 Solar Yellow takes the Ultra Boost 21 silhouette and applies a vibrant colorway of Solar Yellow with Screaming Pink details. The upper is made of breathable PrimeKnit that conforms to the foot's shape and adds durability. However, part of this PrimeKnit is made of PrimeBlue thread, which is made from recycled materials, including plastics found in the oceans. The laces wind through overlays made of a synthetic material that forms the 3-Stripes logo. The sneaker boasts a Boost midsole, as well as adidas’ Torsion System, which increases energy return. Finally, a heel counter supports the heel, while the outsole is made of rubber. The branding details are minimal, but include a panel near the heel that reads 'ULTRABOOST.' Something our experts at StockX like is the Screaming Pink accents on the midsole and outsole. The adidas Ultra Boost 21 Solar Yellow was released on January 28th, 2021, and sold at $180.
The adidas Ultra Boost 21 Solar Yellow takes the Ultra Boost 21 silhouette and applies a vibrant colorway of Solar Yellow with Screaming Pink details. The upper is made of breathable PrimeKnit that conforms to the foot's shape and adds durability. However, part of this PrimeKnit is made of PrimeBlue thread, which is made from recycled materials, including plastics found in the oceans. The laces wind through overlays made of a synthetic material that forms the 3-Stripes logo. The sneaker boasts a Boost midsole, as well as adidas’ Torsion System, which increases energy return. Finally, a heel counter supports the heel, while the outsole is made of rubber. The branding details are minimal, but include a panel near the heel that reads 'ULTRABOOST.' Something our experts at StockX like is the Screaming Pink accents on the midsole and outsole. The adidas Ultra Boost 21 Solar Yellow was released on January 28th, 2021, and sold at $180.
Last updated at 05/05/2026 11:31:59
adidas Ultra Boost 21 Solar Yellow
Delivery $34.95
originally posted on topsandbottomsusa.com
Fits small I need a 9 1/2. Do you send me a return label. I have emailed 2x with 1 response saying send back the 9 and buy the 9.5. What is the process (next steps) was my next email with no response.
originally posted on stockx.com
Sneakers are well constructed and very comfortable but wish I had a half size down but this is no big surprise with Adidas crazy sizing methods .but guess thankful to be able to cop these period since there's not to many of these in this exact colorway still available
originally posted on roadrunnersports.com
I've been a lifelong Nike endorser until these came out! Amazing shoe! They take a bit to break in but once they do you'll never go back! I was a huge fan of the Nike free runs and was skeptical that these could even come close... but they did! This has been by far my favorite shoe! I used it for track and xc training.
adidas Ultra Boost 21 Solar Yellow
Delivery $34.95
Fits small I need a 9 1/2. Do you send me a return label. I have emailed 2x with 1 response saying send back the 9 and buy the 9.5. What is the process (next steps) was my next email with no response.
Sneakers are well constructed and very comfortable but wish I had a half size down but this is no big surprise with Adidas crazy sizing methods .but guess thankful to be able to cop these period since there's not to many of these in this exact colorway still available
I've been a lifelong Nike endorser until these came out! Amazing shoe! They take a bit to break in but once they do you'll never go back! I was a huge fan of the Nike free runs and was skeptical that these could even come close... but they did! This has been by far my favorite shoe! I used it for track and xc training.
These shoes are pretty decent. They have plenty of cushioning in the heel for heel strikers. I’m enjoying them for my runs.
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...
The fit is almost tight enough not to need any laces. I havent tried the size up. I'm normally a 8.5 on Nike but this is snug fit. The archilles tendon has two plastics to hold the shoe in and its tight if you use any cross training or side movements. Just good for running. Been running on a treadmill and not used outdoor.The top lip of my left shoe flips back and doesnt look all that great when i wear it. If only they moved the adidas label just a bit higher so it wont flip back .
I run from 1 to 1.5 hours daily and have for about 50 years. I buy two pairs of shoes at a time, rotate them daily, and replace them with another pair in about three months. I have worn Adidas exclusively for about 30 years. The Ultra Boost 21 is the most uncomfortable Adidas shoe I have worn. I blame the thick plastic "plates" housing the eyelets through which the shoelaces run. With little effort, the edges of the plates could be filed to a knife's blade sharpness. They are that thick. They are so thick that they inflexible, probably by design. And, other than hold the eyelets for the shoelaces, their only function seems to be to cause the upper parts of my feet to hurt. These shoes are miserable to wear. I am stubborn, so I am going to wear them for three months. ... MoreI run from 1 to 1.5 hours daily and have for about 50 years. I buy two pairs of shoes at a time, rotate them daily, and replace them with another pair in about three months. I have worn Adidas exclusively for about 30 years. The Ultra Boost 21 is the most uncomfortable Adidas shoe I have worn. I blame the thick plastic "plates" housing the eyelets through which the shoelaces run. With little effort, the edges of the plates could be filed to a knife's blade sharpness. They are that thick. They are so thick that they inflexible, probably by design. And, other than hold the eyelets for the shoelaces, their only function seems to be to cause the upper parts of my feet to hurt. These shoes are miserable to wear. I am stubborn, so I am going to wear them for three months. I will then use the plastic plates to scrape paint off walls. I gave the shoe two stars because everything but the plastic plates is okay. I do not recommend this shoe.
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.
Long distances and wearing these all day every day Man they are great for that......We're going to run in a little heavy but listen I'm not going racing.If you walk man you could take these guys on a 6 mile walk and have your feet and knees be right as rain. The white ones will be impossible to keep clean.
I've had the last three versions of this shoe including an ST version back in the day and this shoe continues to impress. I do a lot of hill work and the new toe plate has been great working through my transitions. I'm normally a size 13 but I always size up for the extra toe box room and this one continued with that trend. The toe plate makes the shoe a tad firmer on the ball of the foot but the performance is still there and it's my new daily work horse. I'm 6'1" and 220lb and this shoe definitely gets the job done.
