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Hayabusa S4 Leather Boxing Gloves

Model: S4 Leather Boxing Gloves · US configuration

Pair of black Hayabusa S4 Leather boxing gloves with attached thumbs, single hook-and-loop cuffs, and a visible 14 oz marker.
Official manufacturer image · Black / 14 oz pictured

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A closed-thumb, single-strap boxing glove with injection-molded knuckle foam and 10, 12, 14, and 16 oz options; the manufacturer calls its shell genuine leather without stating a grain grade.

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Why consider this model?

  • A shopper looking at Hayabusa's genuine-leather S4 version who needs a listed 10–16 oz option and maker-described heavy-bag use, after confirming the exact session and wrapped-hand fit.

Tradeoffs to weigh

  • The page specifies a single splint, but does not name the single-layer foam structure used on standard S4; it also does not identify a grain grade or publish a sparring-by-weight recommendation.
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Manufacturer information