True-to-Size Millimeter Sizing Comparison

Teva Original Universal vs The North Face ThermoBall™ Traction Mule V

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

4.1(6,857 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full Original Universal Breakdown
4.8(5,040 reviews)
Fit TendencyRuns Small (-4mm)
Width ProfileStandard (Medium)
View Full ThermoBall™ Traction Mule V Breakdown
Fit Verdict

ThermoBall™ Traction Mule V Runs Slightly Smaller

The ThermoBall™ Traction Mule V is about 4mm shorter than the Original Universal. We suggest ordering 1/2 size up in ThermoBall™ Traction Mule V.

Length Delta-4 mm
Width DeltaIdentical

Interactive Size Converter

Select what size you wear in the Original Universal to see your calculated size in the ThermoBall™ Traction Mule V.

Recommended Size in The North Face ThermoBall™ Traction Mule V
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.

Original Universal (US)Internal CavityThermoBall™ Traction Mule V EquivalentMatch AccuracyFit Difference
US 3.5240 mmUS 488%-1.0 mm
US 4243 mmUS 4.5100%0.0 mm
US 4.5247 mmUS 588%-1.0 mm
US 5250 mmUS 5.588%-1.0 mm
US 5.5253 mmUS 6100%0.0 mm
US 6257 mmUS 6.588%-1.0 mm
US 6.5260 mmUS 765%+3.0 mm
US 7267 mmUS 7.588%-1.0 mm
US 7.5270 mmUS 888%-1.0 mm
US 8273 mmUS 8.5100%0.0 mm
US 8.5277 mmUS 988%-1.0 mm
US 9280 mmUS 9.588%-1.0 mm
US 9.5283 mmUS 10100%0.0 mm
US 10287 mmUS 10.588%-1.0 mm
US 10.5290 mmUS 1188%-1.0 mm
US 11293 mmUS 11.5100%0.0 mm
US 11.5297 mmUS 1288%-1.0 mm
US 12300 mmUS 12.588%-1.0 mm
US 12.5303 mmUS 13100%0.0 mm
US 13307 mmUS 1476%+2.0 mm
US 14313 mmUS 1453%-4.0 mm

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Frequently Asked Questions

How does the Original Universal size compare to the ThermoBall™ Traction Mule V?

The ThermoBall™ Traction Mule V is about 4mm shorter than the Original Universal. We suggest ordering 1/2 size up in ThermoBall™ Traction Mule V. The Original Universal has an internal fit offset of 0mm compared to -4mm for the ThermoBall™ Traction Mule V.

Do these shoes fit wide feet comfortably?

The Original Universal has a standard medium width profile, while the ThermoBall™ Traction Mule V is standard medium.