Hayabusa S4 PU Leather Boxing Gloves for Training & Sparring Outdoors

In this review the Hayabusa S4 PU Leather Boxing Gloves stand out as an entry-level option for beginners and casual striking athletes who want dependable protection without a high price. The biggest reason to consider these gloves is the blend of comfort and wrist support right out of the box: the pre-curved ergonomic pocket, grip bar and single-strap with splinted wrist support create a controlled fist and reduce risky bends during pads, bag work or light sparring. They are built to handle regular training while remaining comfortable for most users.

Key Features

• PU leather construction: durable synthetic covering that resists wear from frequent mitt and bag work while staying easy to clean.
• Pre-curved ergonomic pocket: promotes a natural fist closure so hands sit correctly for safer punches and consistent technique.
• Grip bar and thumb alignment: helps maintain correct thumb position to lower the chance of thumb injuries and to support proper striking form.
• Single strap with splinted wrist support: secures the wrist firmly to reduce risky bends and deliver dependable support during training and sparring.
• Mesh palm and nylon lining: improve breathability and speed drying so gloves stay more comfortable across repeated sessions.
• Cushioning foam for knuckles: provides padding that protects the knuckles during impact while still letting the user feel contact.

Who It's For

The S4 gloves are best for beginners, fitness boxers, and those joining kickboxing or taekwondo classes who need a comfortable, supportive glove for training and light sparring. Users who value wrist stability and a glove that feels supportive immediately will appreciate the splinted wrist and single strap design.

Those who should look elsewhere include experienced competitive fighters who need advanced multi-layer foam systems or professional-grade leather for long-term heavy daily use, and people with particularly wide hands who may find the fit a bit tight in smaller weights.

Pros & Cons

Pros

• Good wrist support from the single strap and splinted design for safer training sessions.
• Comfortable, pre-curved fit and grip bar that aid proper fist closure and reduce fatigue.
• Breathable mesh palm and nylon lining that improve comfort during repeated workouts.
• Accessible price and solid value for an entry-level training glove.

Cons

• Fit can run snug for some users, especially those with wider hands in smaller ounce sizes.
• PUsynthetic leather and basic foam may not offer the same long-term durability as premium leather options for very heavy daily use.

Specifications

Our Verdict

The Hayabusa S4 gloves are a strong choice for beginners and fitness-minded fighters who want immediate wrist support, a comfortable pre-curved fit, and breathable features at a reasonable price. They deliver reliable protection and feel like good value for routine training and light sparring, though users seeking premium leather or a roomier fit may prefer higher-end alternatives.

Frequently Asked Questions

Are these gloves suitable for sparring?
Yes, the S4 is designed for training and light sparring with splinted wrist support and knuckle padding for protection.

What sizes are available and which to choose?
They come in 10 oz, 12 oz, 14 oz and 16 oz; choose higher ounces for more padding and for sparring or larger hands.

How breathable are the gloves?
The gloves feature a mesh palm and nylon lining to improve airflow and help them dry between sessions.