Gosen OG-Sheep Micro 18/1.15 Natural String — image 1
Gosen OGSM18

Gosen OG-Sheep Micro 18/1.15 Natural String

Line: OG-Sheep Micro

$4.49

Reference price as of June 2026 Not a live offer

Consistent playing string for all seasons and any weather conditions. Thin 18 gauge supplies ultra playability but less overall durability. Compared to OG Micro Super, this string has a thinner center core. The result is a slightly softer and more powerful response than OG Micro Super.

String specs

Gauge 18/1.15mm
Length 40ft/12.2m
Composition Synthetic Gut (solid core surrounded by nylon filaments)
Color Natural

Where to buy

What players say

Liked 2 sources

No video reviews exist for this exact gauge, but Tennis Warehouse's staff test and a long run of customer reviews agree on the same picture: a cheap, comfortable synthetic gut that most buyers use as a thin cross string with poly or gut mains rather than as a full bed. Reviewers like the feel and value; the main complaint is that the 18 gauge is thin enough to snap for some players.

Best for

  • Cross string with poly or natural gut mains
  • Budget-focused club and recreational players
  • Players who want a soft, comfortable feel
  • Hybrid setups wanting mains to move freely for spin

Pros

  • Widely called a strong value string, with most customer reviews rating it 5/5 on price versus performance
  • Comfortable, soft feel noted by both the Tennis Warehouse playtesters and long-time users
  • Works well as a cross string, letting poly or gut mains move and bite for extra spin
  • Good tension retention reported by multiple long-term users

Cons

  • The thin 18 gauge sacrifices durability, and at least one buyer reported it snapping during tie-off and again right after stringing
  • Tennis Warehouse's test rated spin and durability as its weakest categories, calling it a poor fit for advanced poly players chasing maximum spin
  • String movement was the lowest-scoring category in the staff test

Voices

This is a very comfortable string -- especially for its price.

— Chris, Tennis Warehouse playtester, Web

very high value string ... when weighing price against performance, it is impossible to go wrong

— Mark, Tennis Warehouse playtester, Web

Switched to this 18 gauge coming from 16 gauge, my loopy topspin shots were dipping down several feet closer

— Simon F, Tennis Warehouse customer review, Web

This string is excellent for crosses because it is thin and lets the mains work more freely.

— Ivo De Sá, Tennis Warehouse customer review, Web

Thin with good feel. Working great with any poly main. Does not break even in 18 gauge.

— Eddie, Tennis Warehouse customer review, Web

Yes, this string snapped twice on me. Once during a tie off. And once this string snapped right after stringing

— Anonymous (ME, US), Tennis Warehouse customer review, Web

Sources

Know what players think before you buy

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