Do they have anti slip at the bottom so they don’t slip out of the fins during diving?

No. These Lycra socks do not have any grip.

The product description says seamless, but the picture shows a seam running down the center top- so which is it?

They have a shape like a sock, but only if you run the seam under the foot. I put them on so that the seam is on the side and they seem fine. Have not dived yet with them. It's strange that in the pictures it shows them worn with the seam on the side (Cressi name on the back of the leg) and also with the seam under the foot (Cressi name on the side of the leg). Their marketing department didn't think this through.

Are these tube sock style, or shaped like the foot?

Hello, They are tube sock style since there is no seam under the heel so that it is more comfortable. But anyway the fabric is shorter on the instep neck than the one that passes under the sole and under the heel. So it has a slightly curved half-moon shape.

Need to keep sand out. Do these work?

Yes they do. I use them to work on my dock and surrounding lake bottom, I wear them inside my soft science fin boots.

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🌊 Dive Deeper, Stay Comfy — The Fin Sock Revolution You Can’t Miss!

QUICK DRY TECH - Stay fresh and dry with fast moisture-wicking material that keeps pace with your adventure.
TRUSTED HERITAGE - From Cressi, pioneers since 1946, delivering scuba and snorkeling gear that pros rely on.
SNUG FIT ZERO CHAFE - Engineered for all-day fin wear without irritation—your feet’s new best friend.
UNIVERSAL FIT STYLE - Pull-on design in Large-X-Large, perfect for sensitive feet and year-round water sports.
ELASTIC PERFORMANCE FABRIC - 82% nylon and 18% spandex blend ensures ultimate stretch and resilience under pressure.

The Cressi Ultra Stretch Fin Socks combine a high-performance nylon-spandex fabric with quick-drying technology to provide a snug, chafe-free fit for adult snorkelers and scuba divers. Designed by a trusted Italian brand since 1946, these socks offer durable comfort for prolonged fin use, backed by a 2-year limited warranty.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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R1618

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Age range (description)	Adult
Closure type	Pull-On
Manufacturer	Cressi
UPC	843607582780
Global Trade Identification Number	00843607582780
Color	Blue
Size	Large-X-Large
Style	Regular
Material Composition	82% Nylon, 18% Spandex
Material Type	Nylon Spandex
Number of Items	1
Season	Year round
Features	parking monitor
Usage	Sport
Included Components	Socks
Batteries Included?	No
Department	unisex-adult
Item model number	USW031000B
Product Dimensions	12.19 x 11.43 x 3.56 cm; 31 g
ASIN	B07Q2LQV9M

Elastic Water Sport Adult Socks for Snorkeling, Scuba Diving | ULTRA STRETCH FIN SOCKS by Cressi: quality since 1946

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