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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🌊 Propel your swim game to new heights with FINIS Long Floating Fins!

KICK LIKE A PRO - Long fins elongate your kick, building power and efficiency with every stroke.
TRUSTED INNOVATION - From FINIS, the leader in swim tech, committed to simplifying swimming through cutting-edge design.
FLOAT ABOVE THE REST - Buoyant design lifts legs to surface, perfecting your body alignment and reducing drag for a sleek swim.
EFFORTLESS PULL ON FIT - Streamlined pull-on closure ensures quick gear-up and a secure, comfortable fit every time.
UNIVERSAL SWIM UPGRADE - Engineered for all ages and skill levels—because elite training should be accessible to everyone.

FINIS Long Floating Swim Fins are high-quality training fins designed to improve kick technique and body position by providing maximum buoyancy and forward propulsion. Suitable for swimmers of all ages and skill levels, these fins lift the legs to the water surface, reducing drag and enhancing alignment. Lightweight and easy to wear with a pull-on design, they represent FINIS’s commitment to innovative swim training gear.

Age Range (Description)	Adult
Closure Type	Pull-On
Product Dimensions	20.98"L x 10.98"W
Global Trade Identification Number	00616323200814
Manufacturer	FINIS
UPC	616323200814
Item Package Dimensions L x W x H	17.76 x 10.83 x 2.68 inches
Package Weight	0.7 Kilograms
Item Dimensions LxWxH	20.98 x 10.98 x 2.99 inches
Item Weight	1.5 Pounds
Brand Name	FINIS
Model Name	Long Floating Fin 5-7 Red/Blue
Suggested Users	""
Number of Items	1
Part Number	1.05.037.05
Model Year	2015
Style	Red/Blue
Included Components	Long Floating Fin 5-7 Red/Blue
Size	M (US Male 5-7 / US Female 6-8)

FINIS Long Floating Swim Fins - Training Fins for All Ages - Improves Kick Technique & Body Position

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