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Scarpa Boostic R sizing

Size down about half a size from your street shoe

For a snug all-round fit, a street UK 9 (EU 43) is a UK 8½ (EU 42½) in the Boostic R. Go half a size smaller for hard bouldering, or bigger for long days. It's a starting point: feet differ, so try them on if you can.

Your size in the Boostic R

Your street shoe size

UK9

Aggressive

Tight, hard bouldering

UK8EU 42

Recommended

Snug all-rounder

UK8½EU 42½

Relaxed

Long sessions

UK9EU 43

Comfort

Beginners, multi-pitch

UK9½EU 44
Your size in all 292 shoes

Scarpa Boostic R size chart

Your street size, then the size to get for each fit. From Scarpa's size chart and how this model runs.

Scarpa Boostic R size chart
StreetAggressiveRecommendedRelaxedComfort
UK 4EU 37UK 3EU 35½UK 3½EU 36UK 4EU 37UK 4½EU 37½
UK 4½EU 37½UK 3½EU 36UK 4EU 37UK 4½EU 37½UK 5EU 38
UK 5EU 38UK 4EU 37UK 4½EU 37½UK 5EU 38UK 5½EU 39
UK 5½EU 38½UK 4½EU 37½UK 5EU 38UK 5½EU 39UK 6EU 39½
UK 6EU 39½UK 5EU 38UK 5½EU 39UK 6EU 39½UK 6½EU 40
UK 6½EU 40UK 5½EU 39UK 6EU 39½UK 6½EU 40UK 7EU 41
UK 7EU 40½UK 6EU 39½UK 6½EU 40UK 7EU 41UK 7½EU 41½
UK 7½EU 41½UK 6½EU 40UK 7EU 41UK 7½EU 41½UK 8EU 42
UK 8EU 42UK 7EU 41UK 7½EU 41½UK 8EU 42UK 8½EU 42½
UK 8½EU 42½UK 7½EU 41½UK 8EU 42UK 8½EU 42½UK 9EU 43
UK 9EU 43UK 8EU 42UK 8½EU 42½UK 9EU 43UK 9½EU 44
UK 9½EU 44UK 8½EU 42½UK 9EU 43UK 9½EU 44UK 10EU 44½
UK 10EU 44½UK 9EU 43UK 9½EU 44UK 10EU 44½UK 10½EU 45
UK 10½EU 45UK 9½EU 44UK 10EU 44½UK 10½EU 45–
UK 11EU 45½UK 10EU 44½UK 10½EU 45––

– means past the end of the Scarpa size chart we have.

What Scarpa says

“SCARPA size chart: for climbing shoes, downsizing (1 size) depends on the desired fit”

Quoted from the Scarpa product page

Specs

Rubber
Vibram XS Edge, 4 mm
Closure
2 straps
Made for
sport, bouldering

More Scarpa shoes

Scarpa sizing →

Estimates. Fit depends on foot shape and preference.