True-to-Size Millimeter Sizing Comparison

SOREL Caribou™ vs SOREL Joan of Arctic™ Waterproof

Detailed size conversion chart, cavity measurements in millimeters, and crowd-sourced fit advice for choosing your perfect size.

Shoe Aunisex
SOREL Caribou™
4.3(2,136 reviews)
Fit TendencyRuns Large (+4mm)
Width ProfileWide
View Full Caribou™ Breakdown
Shoe Bunisex
SOREL Joan of Arctic™ Waterproof
4.1(1,614 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full Joan of Arctic™ Waterproof Breakdown
Fit Verdict

Joan of Arctic™ Waterproof Runs Slightly Smaller

The Joan of Arctic™ Waterproof is about 4mm shorter than the Caribou™. We suggest ordering 1/2 size up in Joan of Arctic™ Waterproof.

Length Delta-4 mm
Width Delta-3 mm

Interactive Size Converter

Select what size you wear in the Caribou™ to see your calculated size in the Joan of Arctic™ Waterproof.

Recommended Size in SOREL Joan of Arctic™ Waterproof
US 988% Match

Internal shoe cavity difference: -1.0 mm (snugger)

Alternate option if between sizes: US 9.5 (76% match)

Complete Size Conversion Matrix

Direct millimeter-calibrated mapping comparing all available sizes between both shoes.

Caribou™ (US)Internal CavityJoan of Arctic™ Waterproof EquivalentMatch AccuracyFit Difference
US 3.5244 mmUS 488%-1.0 mm
US 4247 mmUS 4.5100%0.0 mm
US 4.5251 mmUS 588%-1.0 mm
US 5254 mmUS 5.588%-1.0 mm
US 5.5257 mmUS 6100%0.0 mm
US 6261 mmUS 6.588%-1.0 mm
US 6.5264 mmUS 765%+3.0 mm
US 7271 mmUS 7.588%-1.0 mm
US 7.5274 mmUS 888%-1.0 mm
US 8277 mmUS 8.5100%0.0 mm
US 8.5281 mmUS 988%-1.0 mm
US 9284 mmUS 9.588%-1.0 mm
US 9.5287 mmUS 10100%0.0 mm
US 10291 mmUS 10.588%-1.0 mm
US 10.5294 mmUS 1188%-1.0 mm
US 11297 mmUS 11.5100%0.0 mm
US 11.5301 mmUS 1288%-1.0 mm
US 12304 mmUS 12.588%-1.0 mm
US 12.5307 mmUS 13100%0.0 mm
US 13311 mmUS 1476%+2.0 mm
US 14317 mmUS 1453%-4.0 mm

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Frequently Asked Questions

How does the Caribou™ size compare to the Joan of Arctic™ Waterproof?

The Joan of Arctic™ Waterproof is about 4mm shorter than the Caribou™. We suggest ordering 1/2 size up in Joan of Arctic™ Waterproof. The Caribou™ has an internal fit offset of 4mm compared to 0mm for the Joan of Arctic™ Waterproof.

Do these shoes fit wide feet comfortably?

The Caribou™ has a roomy/wide width profile, while the Joan of Arctic™ Waterproof is standard medium.