ReString Slap vs ReString Sync Comparison
Juan
ReString Slap and ReString Sync sit on different ends of the ReString lineup.
ReString Slap is the spin and power option, while ReString Sync is our control and feel string.
Despite that contrast, the two strings share more common ground than you might think. Both carry our Signature Snapback coating, and both are engineered for long-lasting playability.
The core difference comes down to shape and intent.
ReString Slap leans toward spin, bite, and power through its hexagonal profile, while ReString Sync leans toward precision and feel through its round profile.
This article gives you a side-by-side breakdown of both strings to help you pick the best one for you.
| ReString Slap | ReString Sync | |
|---|---|---|
| Shape | Hexagonal | Round |
| Coating | Signature Snapback | Signature Snapback |
| Spin | Maximum | High |
| Power | Very High | Moderate |
| Control | Moderate | Maximum |
| Comfort | Moderate | High |
| Playability | Long-Lasting | Long-Lasting |
| Color | Black | Gray |
| Gauges | 17G, 16G | 18G, 17G, 16G |
ReString Slap
Characteristics
ReString Slap is a hexagonal polyester engineered for relentless spin and easy access to power.
The sharp six-sided profile digs into the ball on every stroke, generating high-RPM spin and rewarding aggressive cuts at the ball.
Our Signature Snapback coating allows the mains and crosses to slide and return to position quickly between shots, storing and releasing energy for a quick, explosive response.
ReString Slap delivers serious power but with enough forgiveness to commit to big shots even on off-center contact. If you want an even more powerful and lively response, consider ReString Zero, our all-out power and spin string.
ReString Slap shares a similar base formula to ReString Zero and can be thought of as ReString Zero's tamed cousin. It plays with more control and forgiveness while still sitting firmly in the power category alongside ReString Zero.
ReString Slap is also engineered for long-lasting playability, holding its fresh feel longer than traditional polyester strings.
ReString Slap originally launched as a limited edition collaboration. Customer feedback was strong enough that we brought it back as a permanent part of the lineup.
The string has since earned acclaim from third-party reviewers, including Tennis Spin, who rated ReString Slap as one of his favorite strings we have ever made.
Playing Style
ReString Slap is built for dominant players like aggressive baseliners who take big cuts at the ball and want high-RPM spin from a shaped polyester.
It also works well for all-court players who lean toward power and spin while still wanting some control in their game.
If you already generate your own pace, ReString Slap complements your natural power without pushing you over the top. You get spin and bite with enough forgiveness to swing freely.
Availability
ReString Slap comes in two gauges, 17G (1.23mm) and 16G (1.28mm).
You can buy ReString Slap as a 12.2m single set, a bundle of five sets, or a 200m reel.
ReString Sync
Characteristics
ReString Sync is a round polyester engineered for control, feel, and longer-lasting playability.
The round profile produces a smooth, traditional ball-contact feel with a more linear response at impact. The cradling sensation enhances pocketing, giving the ball more dwell time.
ReString Sync shares the same Signature Snapback coating as ReString Slap, which keeps string movement smooth and consistent throughout the life of the stringbed.
The direct feedback and precision ReString Sync provides lets you dictate where the ball goes with confidence on every shot.
As the dedicated control and feel string in the ReString lineup, ReString Sync has earned acclaim from third-party reviewers including Tennisnerd and Tenncom.
Playing Style
ReString Sync suits tactical players who build points, redirect pace, and hit to small windows.
That includes counter punchers, all-court players, and most baseliners. The string is built around accuracy and redirecting pace, which are tools that help from anywhere on the court.
Volley-dominant serve-and-volley players also benefit from the strong feel ReString Sync provides on touch shots at the net.
Beyond style, ReString Sync works for players who value predictable depth and a stable launch window, and for those who want to take the ball early or take pace off without losing accuracy.
Availability
ReString Sync comes in three gauges, 18G (1.20mm), 17G (1.25mm), and 16G (1.30mm).
You can purchase ReString Sync as a 12.2m single set, a bundle of five sets, or a 200m reel.
ReString Slap and ReString Sync as a Hybrid
Beyond choosing one string or the other, many players run ReString Slap and ReString Sync together as a hybrid setup.
The most popular configuration, and the one we recommend as a brand, is ReString Slap in the mains and ReString Sync in the crosses.
This pairing combines the spin and bite of a shaped main string with the feel and precision of a round cross, which is best practice for hybriding two polyester strings.
Because both strings carry the Signature Snapback coating, string-to-string movement stays smooth and consistent across the entire stringbed.
Conclusion
ReString Slap is the spin-and-power option. ReString Sync is the control-and-feel option.
The choice comes down to which side of the spectrum matches how you play.
Aggressive baseline play with heavy spin points to ReString Slap, while tactical play with precise counter punching points to ReString Sync.
If you want a personalized recommendation, our String Finder takes you through a few quick questions to land on the right string for your game.
About the Author: Juan is the co-founder of ReString. He was born in Argentina, raised in Japan, and moved to the US to pursue college tennis. He now plays as an ATP & WTA hitting partner.
