What if I am between sizes in the Adidas Forum Low?

Between sizes in the Adidas Forum Low: start with True to size; half up if wide or snug midfoot. Width and sock volume often matter more than splitting a half size.

Should I size up in the Adidas Forum Low for thick socks or break-in?

Break-in: Leather softens over days — day-one midfoot snugness is common. Thick socks add volume — try the sock you will wear with the usual size advice before jumping a full size. See the thick socks & boot break-in guides.

How do women’s sizes work for the Adidas Forum Low?

Open Women’s sizing for this model at /womens/adidas/forum-low/ for the brand’s men’s↔women’s gap plus this model’s fit offset. Do not assume every brand uses a 1.5 gap.

Adidas

Forum Low

Does the Forum Low run big or small?

Adidas Forum Low is generally true to size in length. The last sits snug through midfoot/forefoot for many, so wide or high-volume feet o…

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Partial · methodology

True to Size True to size; half up if wide or snug midfoot

PartialLast reviewed 2026-08-13

Runs smallTrue to sizeRuns big

Length usually matches a typical street size for this category.

Width note: Basketball last — snugger above the ball than many lifestyle Adidas; leather softens

What size should you buy?

Your usual size

Interactive suggestion based on this model’s fit offset (+0 US). Always confirm with a retailer return policy.

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Measured / size chart (cm)

Numbers only when sourced. Empty fields stay blank — we do not invent mm.

Internal length: 27.1 cm (270.9 mm)
Forefoot width: 94.6 mm
Toebox width: 70.7 mm
Reference size: US_M9

Lab measurement · Source: RunRepeat lab · Updated: 2026-08-13

Lab cut at US men's 9. Above-average gel forefoot vs Samba; leather still feels snug midfoot for some — stay Partial.

Know your foot length? Open the cm → size converter.

Adidas size chart (foot-length cm)
US M	UK	EU	cm
6	5.5	38.5	23.5
6.5	6	39	24
7	6.5	40	24.5
7.5	7	40.5	25
8	7.5	41	25.4
8.5	8	42	25.9
9	8.5	42.5	26.2
9.5	9	43	26.7
10	9.5	44	27.1
10.5	10	44.5	27.5
11	10.5	45	27.9
11.5	11	45.5	28.4
12	11.5	46	28.8
13	12.5	47.5	29.7

Chart cm is approximate foot length for label matching — not a lab internal cut. Use the cm converter to map foot length across brands.

Fit scenarios

Between sizes: Start with the advice above, then confirm with the between-sizes / half-size guide.
Break-in: Plan for stiff leather or structured lasts — boot break-in sizing.

Width: Basketball last — snugger above the ball than many lifestyle Adidas; leather softens
Break-in: Leather softens over days — day-one midfoot snugness is common

Summary

Adidas Forum Low is generally true to size in length. The last sits snug through midfoot/forefoot for many, so wide or high-volume feet often half up rather than forcing TTS. Brand and retailer guides agree on TTS for average feet — width camps keep this Partial.

Sources: adidas Forum size guide (TTS; snug/narrow above ball — half up if too tight) · SizeChartGuru Adidas (Forum Low TTS) · RunRepeat Forum Low (TTS owner votes; lab IL 270.9 mm @ US M9) · methodology

Women’s sizing

Adidas uses a 1-size women’s→men’s US gap (not always 1.5). Convert your women’s US size with this model’s fit offset built in.

Women’s size in Forum Low · All brands

Fit depth guide

Forum Low is a basketball heritage last sold as lifestyle. Length is the easy part: most guides land on true to size versus your usual Adidas/Nike number.

Conditional: (1) Average feet → TTS. (2) Wide/high-volume midfoot → half up so the ankle strap and leather do not bite. (3) Between sizes → prefer the size that holds the heel after a short walk, not just standing.

Versus Samba/Stan Smith: Forum is chunkier and usually kinder in forefoot volume than Samba, but still not a wide last. Stay Partial until more independent UGC converges.

What size did you take?

Anonymous fit check for Adidas Forum Low. Helps future readers — we never invent crowd stats.

Community results stay private until 25 responses for this page — no fake percentages.

Prefer email? Fit feedback.

FAQ

Does the Adidas Forum Low run big or small?: True to Size. True to size; half up if wide or snug midfoot Adidas Forum Low is generally true to size in length. The last sits snug through midfoot/forefoot for many, so wide or high-volume feet often half up rather than forcing TTS. Brand and retailer guides agree on TTS for average feet — width camps keep this Partial.
What size should I buy in the Adidas Forum Low?: True to size; half up if wide or snug midfoot
What if I am between sizes in the Adidas Forum Low?: Between sizes in the Adidas Forum Low: start with True to size; half up if wide or snug midfoot. Width and sock volume often matter more than splitting a half size.
Should I size up in the Adidas Forum Low for thick socks or break-in?: Break-in: Leather softens over days — day-one midfoot snugness is common. Thick socks add volume — try the sock you will wear with the usual size advice before jumping a full size. See the thick socks & boot break-in guides.
How do women’s sizes work for the Adidas Forum Low?: Open Women’s sizing for this model at /womens/adidas/forum-low/ for the brand’s men’s↔women’s gap plus this model’s fit offset. Do not assume every brand uses a 1.5 gap.

Generic US / UK / EU / cm reference

Secondary Mondopoint-style table. Prefer the brand chart in Measured / size chart (cm) when converting. Primary system: US_M.

US	UK	EU	cm
6	5.5	39	24.0
6.5	6	39.5	24.5
7	6.5	40	25.0
7.5	7	40.5	25.5
8	7.5	41	26.0
8.5	8	42	26.5
9	8.5	42.5	27.0
9.5	9	43	27.5
10	9.5	44	28.0
10.5	10	44.5	28.5
11	10.5	45	29.0
11.5	11	45.5	29.5
12	11.5	46	30.0
13	12.5	47.5	31.0

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