Introduction
Some time back, I was asked by Toroline if I wanted to collaborate on a new string and here it is: Toroline x Tennisnerd = VAMOS.
I have always been reluctant to this kind of proposal in the past because I have been hellbent on staying as neutral as possible. But now I have decided to become a huge sellout and run the brand into the ground.
Just kidding.
I have been thinking about this a lot, and if I can have any influence on products, I would rather have it before they are made. Giving a thumbs-up or thumbs-down is fine, but I think I can bring more value by helping brands create better-defined products: who they are for, why they exist, and what problem they solve.
I have been testing tennis gear for… yeah, a long time. Tennisnerd started in 2010, and I was already testing racquets and strings before that. So it has been a while. But this is the first time I have collaborated on a product.
We will see how it goes. I hope to do more in the future, but I will, of course, be very selective. And I will stay neutral and test products as objectively as possible.
Find the VAMOS strings available from Toroline (U.S.) or at Tennis Warehouse Europe!
Why do this collab?
There are several reasons I wanted to collaborate with Toroline.
- Eric, who runs Toroline, is a great guy. Genuine, generous, authentic, and nerdy. This is very important for me. I am not driven by money, but by having fun, bringing value, and making connections.
- They make excellent strings. I remember testing Caviar many years ago now and enjoying it. That was in the beginning of Toroline and now they have a wide variety of strings.
- I saw a product gap. Many Toroline strings are on the softer side, which is great for arm comfort, but I did miss a slightly crisper, shaped option.
When they released A5, Eric and I started talking about creating a shaped version of it. After plenty of testing and back and forth, we landed on a hexagonal, sharp, and latte-colored string. I tested it in multiple racquets and was impressed by the ball bite, control, and tension maintenance. It also did not hurt my arm or wrist. In short: it was a winner!
What’s in a name? A lot!

Okay, the name. To be frank, it just popped into my head early on. I liked that Toroline had a version of A5 simply called “Cash” after Julian Cash. It was catchy. Anything with the Tennisnerd name would not have the same ring. But there is something I tell myself every time I play tennis and that is VAMOS. Come on! Let’s go! Rafa made it popular on the global scene and now it is a very popular phrase in tennis.
So I hope you put VAMOS in your racquet and give it a spin. It will help you hit the ball with confidence and enjoy your time playing the best sport in the world.
VAMOS product description
Developed in collaboration with Jonas Eriksson of Tennisnerd, VAMOS is a shaped evolution of A5 — engineered for players who want more bite and a higher launch without sacrificing the connected response that made A5 a favorite among advanced players.
Built from the same foundation as A5, VAMOS features a six-sided (hexagonal) profile in a 1.23mm gauge, designed to increase ball grip and control. Where round strings prioritize a flatter, more penetrating trajectory, the hexagonal geometry of VAMOS increases friction between the string and the ball, helping the string “grab” the ball longer and create a more pronounced spin response.
VAMOS also holds tension exceptionally well, validated both in lab testing and by players across levels.
Overall, the addictive bite, the outstanding control, and tension maintenance, make this string a must-try for aggressive ball strikers.
Toroline x Tennisnerd = VAMOS!
Gauge 1.23MM
Shape Hexagonal
Color Latte
What does the players say?
Some feedback we’ve got from players so far.

Amazed but not surprised
I got a set to try. I gotta say that this string is highly worth giving it a shot. I’m an advanced player and I felt this string could deliver. It maintains a crisp yet compact feel as well as good spin on the ball. I felt like I could hit right through the ball and I would still be in total control of what the ball will do, also i got a good, direct feedback of the ball right at contact.
The tension maintenance also held throughout an entire day of practice with a player on the tour and I feel like it is still good to go for another couple sessions at least. My title is amazed but not surprised because it felt genuinely really good yet I’m not surprised as I know Tennisnerd is not going to produce something so-so, and the collab with toroline being a top-tier string company it’s bound to be a high quality string. I would suggest trying it.
K-A, Spain
I play with a Wilson Pro Staff v13, with Vamos strung at 48 lbs. I’m mostly a baseliner, but I’ve been trying to add more net play to my game lately.
I really enjoyed the feel of Vamos from the first hit. It feels crisp without being harsh, and I get a lot of feedback from the stringbed. I like being able to really feel the ball at contact, especially with the Pro Staff.
From the baseline, I find it easy to get good depth without feeling like I’m giving up control. The response feels predictable, which gives me confidence when I’m hitting through the court.
I’ve been particularly impressed with it on serve and volley. My serves feel accurate, and volleys have a really clean and solid feel. As someone who is still getting used to coming forward more, I find that reassuring — I feel like I know where the ball is going when I make contact.
Overall, Vamos has been a really good match for my Pro Staff. For my game, it gives me the combination I’m looking for: good feel, a crisp response, comfort and control. I’ve genuinely enjoyed playing with it so far.
Erick Hong, Norway
Vamos is my first time trying a Toroline string. Furthermore, my thoughts about the string need to be considered in regard to my usual setup. I’m coming from a 2 year period of gradually lowering my tension and seeking softer strings. My current setup is ProKennex Q+5 (300 g) with either Grapplesnake Mako at 44, or Grapplesnake Alpha at 42.
I strung Vamos at 42. To me, it has a soft feeling but still provides me with a stable and solid feel upon impact, which I appreciate. Compared to Mako, Vamos feels slightly stiffer and gives me slightly less power. Vamos is supposed to be 5 sided. I’m usually preferring rounder strings.
Vamos feels like it gives me a slight bite on the ball without it gripping it too much. For me, that is a good thing since I prefer to stay in control of the amount of spin I put on the ball, rather than the string gripping everything all the time. Overall, I liked Vamos. It had a softer feel without feeling unstable or unpredictable.
Martin Samuelsson, Norway