I just started playing with them and too early to tell, but so far they are easier in the arm and a little more power than ALU rough.

I'm using the microfiber-x on the mains and the protour - black on the crosses. Both strung at 50 lbs. They give me good power and lots of touch. I think I found my perfect match, now I will start adjusting the tensions to make it perfect for my swing.

I'm using the microfiber on the mains and the protour on the crosses. Both strung at 50 lbs. They give me good power and lots of touch. I think I found my perfect match, now I will start adjusting the tensions to make it perfect for my swing.

Looks great on and off the court. It fits well and allows full range of motion with no binding. The sleeve cuffs are well done and allow you to pull them up if needed. Received many compliments while wearing it.

I've been recommending this string for most of my customers who are looking for extra spin, durability, and comfort

I use them in a hybrid setup wit natural gut and love the spin and feel.

I have tried other square strings in the past and didn't like the feel or the way the strings imparted the spin. These strings are perfect! The edges do wear off slowly, but then it's time to restring. I have already bought a couple more sets.

Being in the mid forties and still being active in tournaments in addition to a full tennis teaching schedule I needed a string that I can compete with but also wouldn’t be too hard on my arm. I tried a few different strings o er the past years but have always come back to the Quadro. It has helped me and my wife Brandi win a few National Titles and a couple of mixed World Championships.

Kodiak High school uses a hybrid of Hexagon-X Pearl Red 16L and ProTour 17L strung at between 48 and 53 depending on the racket…. We Love it.

I’ve won 4 gold balls this year and 1 team national championship using this amazing string. It is soft on the arm and offers immense spin action to my serve and groundstrokes. The feel is perfect

Been using the Protour black 17L for a cross string with Square X Sharp in the mains. Everyone has been loving it on my team. Hoping it will be durable enough to keep this my top spin/arm friendly poly hybrid!!!

I’ve used this string for years and love it. Gives you easy top and back spin and very arm friendly.

If you have not purchased your YTEX shorts yet, this is your sign to go buy some ASAP before they sell out.

These feel amazing. As a tennis player, it's imperative to have the right pair of shorts so you feel loose and free while playing your match. These exceed all of my expectations and I will be wearing these on and off the court.

Use my code MMITCHELL15 to receive 15% off of your purchase.

High quality, great look, and amazing comfort!!! Will definitely purchase another pair!! Hope to see more color options soon!

I like the spin and power you get with it it also has some control as well, could be a little more durable but other then that it is a great string