Hayabusa S4 PU Leather Boxing Gloves for Training & Sparring

Our review of the Hayabusa S4 finds it to be an excellent starter glove for anyone beginning striking work who wants dependable protection without a steep price. The single most compelling reason to buy is the combination of a pre-curved ergonomic pocket and splinted wrist support that delivers secure alignment and real wrist stability the moment you lace up. Built from PU leather with a mesh palm and nylon lining, the S4 feels comfortable from the first session and is clearly designed to withstand frequent training and sparring.

Key Features

• PU leather construction: Provides a durable, easy-to-clean outer shell that stands up to regular bag work and mitt sessions.
• Pre-curved ergonomic pocket: Encourages natural fist closure and reduces hand strain when practicing combinations and drills.
• Splinted wrist support and single strap: Work together to secure the wrist and prevent risky bends during impact.
• Mesh palm and nylon lining: Improve airflow and comfort during longer training sessions, helping the glove break in without trapping moisture.
• Padded knuckle protection: Cushions strikes so beginners can hone technique with less shock to the hands.

Who It's For

The Hayabusa S4 is best suited for beginners and recreational athletes in boxing, kickboxing, Muay Thai, taekwondo and mixed martial arts who need a reliable, entry-level glove for training and light sparring. It is also a good choice for parents buying for youth classes because the smaller sizes and forgiving construction are straightforward to use.

Experienced competitors who need specialized contest gloves or highly tailored fit might look elsewhere, and anyone who requires a very wide fit should try them on first because some users report a snug initial fit. The S4 is designed with comfort and protection in mind, not elite-level competition feel.

Pros & Cons

Pros

• Comfortable, supportive fit right away thanks to the pre-curved pocket and grip bar.
• Reliable wrist stability from the splinted support and single strap design.
• Good value for money for beginners, with protective padding and durable PU leather.
• Mesh palm and nylon lining improve breathability during regular use.

Cons

• Fit can be tight for some hands initially; sizing choice matters for comfort.
• Durability reports are mixed-gloves often break in well, but long-term wear varies by user.

Specifications

Our Verdict

The Hayabusa S4 is a well-rounded beginner training glove that balances protection, comfort and value. It is a smart buy for new boxers and recreational martial artists who need dependable wrist support and knuckle padding for frequent workouts, though those with wider hands or elite competition needs should evaluate fit and options first.

Frequently Asked Questions

Are these gloves suitable for sparring?
Yes, the S4 is designed for training and light sparring, offering padded knuckle protection and a splinted wrist to reduce shock.

What sizes are available?
The gloves come in 10 oz, 12 oz, 14 oz and 16 oz to match different training and bodyweight needs.

What materials are used?
The S4 uses a PU leather outer, nylon lining and a mesh palm to improve durability and ventilation.