True-to-Size Millimeter Sizing Comparison

Reef Cushion Vista Hi vs Reef Reef Neptune

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

Shoe Aunisex
Reef Cushion Vista Hi
4.0(3,251 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full Cushion Vista Hi Breakdown
Shoe Bunisex
Reef Reef Neptune
4.9(2,396 reviews)
Fit TendencyTrue to Size
Width ProfileStandard (Medium)
View Full Reef Neptune Breakdown
Fit Verdict

True to Size Comparison

Both shoes share a very similar length profile. We recommend ordering your standard size in both.

Length Delta+0.36 mm
Width Delta-0.15 mm

Interactive Size Converter

Select what size you wear in the Cushion Vista Hi to see your calculated size in the Reef Neptune.

Recommended Size in Reef Reef Neptune
US 8.596% Match

Internal shoe cavity difference: +0.4 mm (slightly roomier)

Complete Size Conversion Matrix

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

Cushion Vista Hi (US)Internal CavityReef Neptune EquivalentMatch AccuracyFit Difference
US 3.5240 mmUS 3.596%+0.4 mm
US 4243 mmUS 496%+0.4 mm
US 4.5247 mmUS 4.596%+0.4 mm
US 5250 mmUS 596%+0.4 mm
US 5.5253 mmUS 5.596%+0.4 mm
US 6257 mmUS 696%+0.4 mm
US 6.5260 mmUS 6.596%+0.4 mm
US 7267 mmUS 796%+0.4 mm
US 7.5270 mmUS 7.596%+0.4 mm
US 8273 mmUS 896%+0.4 mm
US 8.5277 mmUS 8.596%+0.4 mm
US 9280 mmUS 996%+0.4 mm
US 9.5283 mmUS 9.596%+0.4 mm
US 10287 mmUS 1096%+0.4 mm
US 10.5290 mmUS 10.596%+0.4 mm
US 11293 mmUS 1196%+0.4 mm
US 11.5297 mmUS 11.596%+0.4 mm
US 12300 mmUS 1296%+0.4 mm
US 12.5303 mmUS 12.596%+0.4 mm
US 13307 mmUS 1396%+0.4 mm
US 14313 mmUS 1496%+0.4 mm

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Frequently Asked Questions

How does the Cushion Vista Hi size compare to the Reef Neptune?

Both shoes share a very similar length profile. We recommend ordering your standard size in both. The Cushion Vista Hi has an internal fit offset of 0.32mm compared to 0.68mm for the Reef Neptune.

Do these shoes fit wide feet comfortably?

The Cushion Vista Hi has a roomy/wide width profile, while the Reef Neptune is roomy/wide.