GAMMA Sports is a family-owned business with a 40-year history of developing innovative products that advance racquet sports for players of all levels.
iO Soft is a more forgiving version of iO poly, that offers less shock on impact than stiffer co-polyester strings. The softer feel provides generous power and greater feel without harsh vibrations. Ideal for intermediate to advanced players.
40 ft/12.2 M, 660 ft/201 M
15L/1.40 mm, 16/1.29 mm, 17/1.24 mm
High energy co-polyester materials are manufactured with a proprietary, multistage drawing process to increase strength and minimize tension loss for maximum durability and longer play life.
GAMMA String Performance Guarantee
GAMMA guarantees the performance of your GAMMA string. If for any reason you are not satisfied with the performance of a guaranteed string, GAMMA will refund your purchase price. Subject to terms below.
To request a refund you must fill out and return the GAMMA String Performance Guarantee Claim Form (download PDF to the right) within 14 days of purchase.
GAMMA has been combining science with sport since day one. Our commitment to research and development has helped us create some of the top racquet sports equipment on the market.
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