ARENAUnisex Adult Powerfin Pro Swim Training Fins Men and Women Silicone Short Blade Flippers Left-Right Custom Design, Sizes 4.5-13.5

The only reason I am not giving these a 5 star is that they're not 100% comfortable, but is any fin? But they are comfortable enough to easily swim 1,250 yards in them. They stay on perfectly. I haven't used swim fins for over 40 years, but was thrilled when I put these on and felt instant speed and power. I really think these fins have helped my leg strength and kick. I don't know how durable they are yet, as I have only had them since July 8, but so far so great! I love the fun colors available! I chose the lime green.Concerning sizing, if your feet fit snugly in them, that's ok! You're not walking in them! I wear a 9.5-10 in women's, ordered the men's 8-9 as was suggested, and they fit great kicking in the water! And the price was reasonable as well, compared to other fins. I definitely recommend them.

These fins are some of the best on the market. The open heel allows you more flexibility and mobility while kicking. Fins aren't too heavy to prevent drag and they aren't too long so you can still kick tight and fast while sprinting.The only thing to make sure is that you get the correct size. They run true to size and the area where your toes go tapers down towards your pinky toe. My son has these fins as well and for his foot the second toe is longer than his big toe so it contacts the end of the open space. it does not rub or cause issues but can be a problem for some people since the only opening is for your big toe.

First, about the fins. I had been using TYR fins for 2 years. The TYR fins are OK, but they were hurting my toes, and I wanted something different. I bought these Arena fins. The Arena fins are slightly shorter and a little wider than my old TYR fins. The Arena fins make me go faster than the TYR fins, and I feel the kick better than with the TYR fins. With the Arena fins, I am more than 5 sec faster versus the TYR per 50 with my flutter and dolphin kicks. Because I can feel the water better, I am hoping that results in better conditioning and performance.Second, about sizing. I wear a men's US size 9. I first bought these fins men's size 8 to 9 US. I liked that the foot was snug, but the toes were too tight. Then I bought the same fin in size 9.5 to 10 US. My toes feel good, but my foot is a little too loose in the fin. I am fluctuating between the two sizes until I figure out which fits best for my foot.

Let's put it this way: these training fins are great! They are compact—a little on the heavy side—but they feel right on the water. You really can feel your legs working out, and when you are just swimming at a strong, steady, and low pace, it feels like your legs are exercising but gliding along the water.MATERIAL:They seem durable, sturdy, but flexible. I think I had bad luck with mine, or there may be a flaw in the design. My first pair and the replacements that Arena sent me started cracking in the same spot (same foot), but even though one of them has a crack, I still use them, and they haven't gotten any worse or affected my performance on the water.COMFORT:I purchased the size 9.5–10.5, and they are snug. What I like about these particular fins is that they have the area of the heels open, which gives you better movement while swimming.CUSTOMER SERVICE:The only effective way to contact them is by email. In my experience, they have responded on a positive note, but I'll say that they can take a little longer to get back to you.FINAL NOTE: Regardless of my troubles with the material, I still think these fins were a great purchase.

Fins is just the right size for dropknee doesnt get caught on the board, alot of thrust for prone riders, best of all i dont get cramps using these fins. I wear a 10.5- 11 shoes depending on the brand, but I got the xl size fins no cramping or blisters. Fins are cherry!

My third pair of swim fins ordered and these are the winner. The first two were either too tight or too loose, but these were just right. I get the Goldilocks thing, but being able to wear this pair in the water and know that they are secure without tearing into the skin around your ankle or falling off when pushing off the wall is kind of a big deal. Easy to get on a take off.

Have only used it once ao far, but makes u swim faster.

Awesome training aid

These are excellent flippers that are worth the money! I tried the speedo switchblade fin first and they just weren't comfortable. The toe opening was too sharp and stiff. These flippers are completely silicone, but they don't feel flimsy and cheap as the silicone is quite thick everywhere. At first I thought they were too small just standing in them on dry land. They were my typical size, but my toes went right to the end of each toe box and poked into them a little. I decided to try and swim with them and they actually felt perfect in the pool. The larger size wouldn't be as snug, but that would probably work against me in the pool. As is, they didn't budge a bit while swimming and gave me an excellent work out in my thighs and core muscles, plus added speed while using them. Very enjoyable experience. Can't wait to swim in them again!

Muy bonitas, de muy buen material y gruesas

Increíble propulsión

I wanted to mentioned that the color is a bit off than the picture of this product! Everything else looks good.

Excelente produto, por ser um fin um pouco menor, acredito que seja mais voltada à nadadores mais experientes, estou amando o par.