do these run wide? My grand daughter has a very wide foot.

No, do not run wide. The are true to size - standard. However, they are made to stretch and flex. The rubber around the foot has to be tight, to stay on while swimming. They are generally more difficult to get on, but excellent at staying on.

How do the sizes translate to actual shoe sizes?

These run small. I always buy a 39 or 40 in Euro sizes, but these -- 36 - 42 Euro -- are too small. Had to return them and get the next larger size.

Why do these come covered in slimy stuff?

That will come off once you use it the first time or you can wash them off with some liquid detergent. It is a coating the fins come with to keep them from drying out and to keep their bright colors to look good for retail sales. It will not interfere with its wear. Lynn from Swim Zone Inc.

Hi my son is 10 years old and he used shoes size 7. Which size will be?

If you are talking about a size 7 in mens shoes, which is like an 8 or so in women's shoes, then get the L MEN 7-9. (Does he has fairly large feet for his age?) I wear a size 8-8.5 in women's shoes and got the Large size fins. They fit correctly. Plus buying a size a little too big is MUCH better than too small, because his feet will grow!

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Description

🏊‍♂️ Swim Stronger, Swim Smarter – Float Above the Rest!

HYDRODYNAMIC POWER BOOST - Long fins amplify propulsion for faster, stronger kicks.
ULTIMATE ANKLE PROTECTION - Closed heel design prevents over-bending and enhances comfort.
VERSATILE FLOATING DESIGN - 100% natural rubber fins float effortlessly in both fresh and saltwater.
ALL LEVEL TRAINING ESSENTIAL - Perfect for swimmers of every age and skill, pool or ocean.
UNIVERSAL FIT COLOR CODING - Sizes from junior 8 to adult 14, color-coded for easy selection.

The FINIS Long Floating Fin is a premium training fin made from 100% natural rubber that floats in both fresh and saltwater. Designed with a closed heel to protect ankles and enhance comfort, it significantly boosts leg strength and propulsion for all swimming styles. Available in a wide size range with color-coded fronts, it’s ideal for swimmers of all ages and skill levels aiming to improve speed and technique in pool or ocean training.

Specifications

Age Range (Description)	大人
Closure Type	プルオン
Global Trade Identification Number	00616323200838
Manufacturer	FINIS
UPC	720449340931 616323200838
Model Number	1.05.037.07
Size	XL Men 9-11 Women 10-12
Batteries Included	No
Target Audience	Unisex Adult
Product Dimensions	63.5 x 33 x 10.2 cm; 898.11 g

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