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adidas UltraBoost 21 'Grey Sonic Ink'
adidasadidas UltraBoost 21SneakersMen'sGrey

adidas UltraBoost 21 'Grey Sonic Ink'

SKU · S23871

The adidas UltraBoost 21 'Grey Sonic Ink' (style S23871) is carried by 5 stores SoleScout tracks, priced from $110 to $175. The cheapest listing right now is $110 — $70 under the $180 retail price. 4 US sizes are in stock somewhere right now (7.5–10), and the table below shows the cheapest store for each one. SoleScout doesn't sell this — we link straight to the retailer's own checkout.

US Men's Sizes

4 SIZES · US
7.5
$110$180
-39%
8.5
$110$180
-39%
9
$110$180
-39%
10
$110$180
-39%

Where to buy

RETAIL $180 · 5 SOURCES
$110 is $70 under retail — at a hidden retailer. Unlock to see where.
GOATMARKETPLACE
All sizes on site
Go
Farfetch19% OFF
4 sizes · 7.5 · 8.5 · 9 · 10
$180
$145
Go
3 more sources · locked
from $110
Retailer39% OFF
4 sizes available · hidden retailer
$180
$110
Locked
Retailer23% OFF
4 sizes available · hidden retailer
$180
$139
Locked
Retailer3% OFF
4 sizes available · hidden retailer
$180
$175
Locked
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Prices are each store's own retail. Some links are affiliate — they support SoleScout at no cost to you.

Questions

Where can I buy the adidas UltraBoost 21 'Grey Sonic Ink'?

5 retailers tracked by SoleScout currently list this sneaker, starting at $110. The "Where to buy" list on this page names each store and links to its own product page.

How much does the adidas UltraBoost 21 'Grey Sonic Ink' cost?

Across every tracked store the price ranges from $110 to $175, against a $180 retail price. Prices change daily; this page reflects the stores' own current listings.

What sizes of the adidas UltraBoost 21 'Grey Sonic Ink' are still available?

US sizes 7.5, 8.5, 9, 10 are in stock at at least one tracked retailer. The per-size table shows the lowest price for each size.

What is the style code for the adidas UltraBoost 21 'Grey Sonic Ink'?

The manufacturer style code is S23871. SoleScout matches this shoe across stores by style code, which is why listings that name it differently still line up.

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SoleScout compares 589 retailers and does not sell products. Prices and size availability come from each store's own listing and change daily — always confirm on the retailer's page before buying.

adidas UltraBoost 21 'Grey Sonic Ink' S23871 — Where to Buy