What size is Adidas US 10 in Reebok?

About Reebok US 10 (EU 44), matched by ~27.1 cm. Then adjust for the specific model.

Is a Adidas 10 the same as a Reebok 10?

Not always. Labels can map to different foot lengths — use cm, then model fit.

Brand-to-brand size at a fixed US label — matched by foot length (cm), not guesswork.

Adidas US 10 maps to about 27.1 cm on that brand’s chart. The nearest Reebok row at that length is US 10 / EU 44.

Same chart cm can still feel different on foot. Read the guides:

Adidas: Samba OG (runs narrow) · Gazelle (runs big) · Ultraboost 1.0 (true to size) · Campus 00s (true to size) · Handball Spezial (true to size)

Reebok: Club C 85 (true to size)

What size is Adidas US 10 in Reebok?: About Reebok US 10 (EU 44), via ~27.1 cm.
Where is the full size table?: Adidas to Reebok compare.