Tennis Warehouse
ISOSPEED Energetic 17 String Gold Price: $8.99

Buy 5 or more for $7.99 per set.
Buy 10 or more for $6.99 per set.
On initial inspection, Energetic has visual similarities to Kevlar or an aramid product, but the comparison ends there. Iso-Speed claims the multifilament Energetic 17 combines comfort, control and durability. This string is recognized in particular for its tension maintenance. A popular choice for players using larger racquets. Iso-Speed Energetic 17 gauge is a multifilament with an inner core comprised of 280 polyemide fibers with an outer core of 600 polyester fibers. Polyolefin ribbons are then applied to create the outer wrap.

Read our playtester review

  • Gauge: 17 (1.20mm)
  • Length: 40 feet.
  • Benefits: Pre-stretched filament technology. High marks for tension maintenance with good durability. High spin production with limited trampoline effect.
  • Available colors: Gold

Product NamePriceIn StockQty
ISOSPEED Energetic 17 String Gold
$8.99
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Customer Feedback
A durable multifilament string offering nice comfort and feel.
Available - 15    Order
ISOSPEED Professional 17 String - $10.99
Customer Feedback
Using a heat-seal to increase durability and a pre-stretched multifilament layer for minimization of tension loss, Professional offers a gut-like feel.
Available - 20+    Order