Merrell Big Kid - Hydro Lily - Water Shoes size guide

Turquoise

Our tool compares official Merrell size charts to find your perfect size. No measuring needed.

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Does the Merrell Big Kid - Hydro Lily - Water Shoes run small or large?

Fit guidance comes from our community and the sizes owners report to us. We do not hold any for the Merrell Big Kid - Hydro Lily - Water Shoes yet. By adding shoes you own you are helping our community extend the coverage. Add your shoes

Merrell has not published a size chart for the Merrell Big Kid - Hydro Lily - Water Shoes. What you see above is the brand's general chart, which covers the whole range rather than this model.

Official Merrell Size Chart for Big Kid - Hydro Lily - Water Shoes

This chart covers EU 40 to EU 51, which is feet from 0 cm to 34 cm long.

This is the official brand-wide Merrell size chart. Merrell uses the same chart for the Merrell Big Kid - Hydro Lily - Water Shoes as for its other models.

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Fetched 2026-09-02 16:12:29

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Official Merrell Size Chart for Big Kid - Hydro Lily - Water Shoes
Foot Length UK EU
0.0 - 25.0 cm 6.5 40
25.0 - 25.5 cm 7 41
25.5 - 26.0 cm 7.5 41.5
26.0 - 26.5 cm 8 42
26.5 - 27.0 cm 8.5 43
27.0 - 27.5 cm 9 43.5
27.5 - 28.0 cm 9.5 44
28.0 - 28.5 cm 10 44.5
28.5 - 29.0 cm 10.5 45
29.0 - 29.5 cm 11 46
29.5 - 30.0 cm 11.5 46.5
30.0 - 30.5 cm 12 47
30.5 - 31.0 cm 12.5 48
31.0 - 32.0 cm 13 49
32.0 - 33.0 cm 14 50
33.0 - 34.0 cm 15 51

Merrell publishes this chart as foot length, so the lengths above are the foot each size fits and we use them as published.

US_BIG_KIDS 11 🇺🇸

Frequently Asked Questions

The Merrell Big Kid - Hydro Lily - Water Shoes runs true to size, so it matches standard sizing.

Your Merrell Big Kid - Hydro Lily - Water Shoes size depends on your foot length and the shoes you currently wear. Use our size finder tool to get a personalized recommendation based on shoes you already own. Alternatively, measure your foot length in cm and use the size chart above to find your Merrell size.

Yes, the Merrell Big Kid - Hydro Lily - Water Shoes runs true to size compared to standard Merrell sizing. Order your normal size.

Use the size chart above to convert between EU, US and UK sizes for Merrell Big Kid - Hydro Lily - Water Shoes. Each size shows the corresponding foot length in mm so you can see what the charts say.

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Official

The chart comes from the brand. We read it from a page the brand publishes and we link that page so you can check it.

Model specific chart

The brand publishes this chart for this shoe. Sizes on it apply to the shoe you are looking at.

Brand-wide chart

The brand uses one chart across its range. We show it when the shoe has no chart of its own.

Crowdsourced

Sizes reported by people who own this shoe. The number beside it tells you how many.

Last updated: 2026-09-02 16:12:29