La talla fue la correcta. Son bastante cómodas, o por lo menos me parecen más cómodas que las Speedo biofuse que son más pesadas.

Me gustaron, como su nombre lo dice ideales para entrenamiento, las uso en alberca y son muy útiles para mi, compre X-Large y ajustan bien para una medida de entre 8y9 México, estoy satisfecho.

It's just what I was looking for. Had them in the pool the other day and they worked perfectly. I would recommend them to anyone wishing to add to their swim training. No issues with sizing either.

I recently took up swimming for fitness. I use mid-length fins to get a better workout when I swim. My first pair of fins (another manufacturer) gave up the ghost after 6 weeks of use. So I did some research and decided on Tyr CrossBlade fins as my replacement fins. My foot is a size 9 XW so I ordered the large size (size 9 to 11) CrossBlade fins (red). The length was OK but the width was a problem. The large fins were far too narrow (painfully so) to use... as a result, I contacted Amazon customer service and true to their stellar reputation, they cross shipped me the next size up which I got in 2 days and I returned the large pair. The XL fins are blue and while they are for a size 11 to 13 foot, I have no problems with the length of the foot pocket. The width is snug but comfortable for my XW size 9s. They are a bit stiffer (less flex) than my previous fins but I like this characteristic. My swims are typically 1200 to 2000 meters and in the week that I have been using these fins, I have had no cramping in my legs or feet... This afternoon I swam a personal best time on 1200 meters with these fins and they felt great and gave me no problems.And now for some (swimming) life hacks - baby shampoo! >>>First baby shampoo hack - these fins are a bit snug and don't necessarily go on easily even when wet without some ingenuity... 2 things make getting them on easy - first, I invert the heel of the foot pocket (folding the back of the foot pocket under the bottom of the heel... second, I put a drop of baby shampoo on the pad of my index and middle fingers and rub it onto the inside surface of the top, sides, and bottom of the foot pocket of the dry fins (at home before going to the pool). Then at the pool, I get in the water with the fins (still dry) on the deck next to my lane. I put the fins into the water (1 at a time) and immediately slide them on my foot (with the heel inverted). I then pop the back of the heel pocket up to its usual position and put on the other fin in the same fashion. With this method the fins go on quickly, easily, and comfortably - first time and every time.Second baby shampoo hack - goggles... All goggles eventually lose their anti-fog coating. I use a (wrist) stopwatch during my workout sessions to keep track of total distance and split times (per 100 meters)... fogged goggles would make that impossible... My solution it to put 1/2 drop of baby shampoo on the tip of my index finger and apply it to and smear it around the inside of each of the front facing lenses in my goggles. You only need a little - I use 1/2 drop for each side. Your not trying to gooey up the lenses just "dirty them up" a little on the inside. Just like the fins, I do this before leaving my house to go to the pool. This allows the baby shampoo to "dry". When I get to the pool, I leave my goggles (dry) on the deck next to my lane until I am ready to put them on. When I am ready, I get the goggles and dip them into the pool for a second or 2 and then lift them out of the water and shake any excess water out of them... and then put them on and seat/adjust them with my head above water... Then I swim my workout. Using this method, I have never had any fog problems with my goggles. My goggles occasionally leak a bit and I have never had a problem with burning eyes either - probably because it is BABY shampoo! ;-) Note: this hack also works for scuba masks used during scuba diving (that's where I first used this hack 20+ years ago)...I use the "travel size" of Johnson's baby shampoo - I put some in a dropper bottle but you can use the travel size just as well. I always have a bottle in my swim gear bag ("just in case")... In case you need a link, here it is >>> http://www.amazon.com/gp/product/B00LVUOL5I?keywords=1%20ounce%20johnsons%20baby%20shampoo&qid=1447216663&ref_=sr_1_5&sr=8-5

These are good fins, my daughter uses them in training. Be careful with the sizes, I got the right size the first time but the second time I got it wrong.