Diadem Sports Solstice Reel

The star-shaped profile is designed to bite into the ball upon impact, which significantly increases spin potential. Because the edges grip the ball rather than sliding across it, you get a more predictable, heavy-spin trajectory.

Solstice Black is engineered as a 'soft' co-poly, meaning it is more forgiving on the arm than traditional, stiffer polyester strings. While it still offers the control and precision of a poly, the material composition is specifically tuned to reduce harsh vibrations.

Thinner gauges like 18 (1.15mm) offer maximum spin and feel but will break faster. Thicker gauges like 16 (1.30mm) or 15L (1.35mm) provide better durability and tension maintenance, making them a better choice if you are a heavy hitter who breaks strings frequently.

Diadem improved the extrusion process for this string specifically to enhance tension stability. While all polyester strings lose some tension over time, this reel is designed to hold its playability longer than many standard co-poly options.

Yes, the low-friction surface is a key feature that promotes 'snap-back.' This allows the main strings to slide out of place upon impact and quickly return to their original position, which helps generate extra spin and prevents the strings from getting stuck out of alignment.

While this is a high-performance string often used by advanced players, its softer feel makes it more accessible than many other polyester options. If you are a beginner looking to transition into a control-oriented string without the harshness of traditional poly, this is a very manageable entry point.