Tier One Sports T1-Firewire - Co-Poly Tennis String for Ultimate Spin

This is a very good co-poly string. I have used RPM Blast (my previous favorite), Big Banger Alu, Cyclone, and a few others full-bed and in hybrid configurations: I like FireWire better than any of them. This string has amazing spin potential! It also has a relatively "soft" feel (for a polyester)-I don't have any problems with it feeling too stiff or boardy. I am using it at about 52lbs in a mid-plus racket and have tried it at 45lbs in a mid (93).

This string (red firewire 17g) is an amazing MAIN string. Spin, ball grab, feel, & playability duration are all top notch. (so-so on snap back). It pairs very well with kirschbaum PL2, or syn gut in the crosses. I did not like this as a full bed tho. 4.0 hard hitter (5.0s hit harder than me)

I've been using the string now for two weeks. I had my racquet strung at 56lbs. For a Co-poly blend, this has some solid feel with good power. I plan on buying it again and stringing at a lower tension. I am a USTA rated 4.0/4.5 player.

My favorite tennis string for me. Great topspin and tension. Use for Head prestige mid plus

Great string for a slicer. The strings have lasted over a year playing 1-2 times a week. I am not a heavy hitter, though.

So far, so good. Need to play more to evaluate durability and tension maintenance. Great bite on the ball.

I am using this string for more than a year and will not change it. Gives great spin on my shots. Good price for a quality product.

It's a good string. I used it for over a year and still like it.