Hayabusa Core Long-Sleeve Rash Guard - Black

The Hayabusa Men's Core Long Sleeve Rash Guard is designed for BJJ practitioners and MMA fighters who want full arm coverage during grappling, combined with a second-skin fit and competition-ready features. With a silicone waistband, moisture-wicking 200 GSM fabric, and a lockdown loop to secure the rash guard to your shorts, this rash guard stays exactly where it belongs. Stable, dry, and distraction-free during every training session.

Features

• Advanced 200 GSM high-tensile fabric for relentless durability
• Silky-soft fabric with adaptive stretch for a fit that moves with your body
• Silicone-lined waistband that keeps the rashguard in place
• Lockdown loop at the hem to secure the rash guard to your fight shorts
• Bonded seam construction at the neck for friction-free comfort
• Moisture-wicking, quick-dry design for elite performance
• Reinforced flatlock stitching for indestructible durability
• Long sleeves for full arm coverage and protection
• Extensive size range from Small through 3X-Large

Usage

The Core Long Sleeve Rash Guard is specifically designed for Brazilian Jiu-Jitsu and MMA training. The rash guard is ideal for:

• No-gi BJJ training and open mats
• Submission grappling and wrestling
• BJJ competitions and tournaments
• MMA sparring and clinching
• As a base layer under your gi for extra comfort and protection
• Cross-training and functional fitness

The long sleeves provide full protection for your arms, which is especially valuable during grappling and mat work. They protect against mat burns, scrapes, and the spread of bacteria, which is essential for hygiene in grappling sports.

Why a rash guard?

A good rash guard is indispensable for BJJ and MMA practitioners. It protects your skin from mat burns, scrapes, and bacterial infections such as staph and ringworm, which, unfortunately, are common in grappling gyms. In addition, a rash guard wicks away sweat, keeps you cool, and reduces the risk of skin irritation caused by friction between your skin and that of your training partner. The long-sleeve version offers extra protection and warmth, ideal for cooler gyms or for athletes who prefer the added coverage.

Material and Construction

The Core Rash Guard is made from a 200 GSM polyester-spandex blend with four-way stretch. This composition offers several advantages: the four-way stretch allows the fabric to move with your body in all directions, the silky-soft texture feels smooth against the skin, and the quick-dry properties wick away sweat quickly. The reinforced flatlock stitching prevents irritation during prolonged contact with the mat or your training partner, and ensures that the rash guard retains its shape after hundreds of rolling sessions.

Locked-in Fit

A crucial detail that sets the Core Rash Guard apart is its smart closure system. The silicone-lined waistband grips gently against your skin or your fight shorts, preventing the rash guard from riding up during rolling. The lockdown loop at the hem allows you to attach the rash guard directly to your fight shorts for a fully locked-in, competition-ready fit. No more shirts riding up in the middle of a scramble—you stay completely focused on your technique.

Neck Design

The neckline features a bonded seam construction instead of a traditional stitched hem. This eliminates friction points around the neck, which is essential during grappling techniques such as chokes and collar work. The result is a rash guard that feels comfortable, even during long technical sessions.

Size Guide

The Core Long Sleeve Rash Guard is available in six sizes, from Small through 3X-Large. Use the guidelines below based on your chest measurement and height:

• Small – chest circumference approximately 91–97 cm, height 1.68–1.75 m
• Medium – chest circumference approx. 97–104 cm, height 1.75–1.80 m
• Large – bust size approximately 104–112 cm, height 1.80–1.85 m
• X-Large – bust size approximately 112–119 cm, height 1.85–1.90 m
• 2X-Large – chest circumference approximately 119–127 cm, height 1.90–1.95 m
• 3X-Large – chest circumference 127 cm and up, height 1.95 m and up

Rash guards are designed to fit snugly like a second skin. Therefore, choose your regular size—not a larger one. Not sure? Follow the guidelines above based on your chest circumference.

Who is it for?

This rashguard is suitable for beginners, intermediate, and advanced BJJ practitioners, grapplers, and MMA fighters. Beginners just starting no-gi training appreciate the protection against mat burns and skin irritation, while advanced and competitive athletes choose the Core for its locked-in fit and premium features. The long sleeves are ideal for athletes who want full arm coverage, for cooler gyms, or as a base layer under a gi.

Difference from the Short Sleeve Version

The Hayabusa Core Rash Guard is available in both short-sleeve and long-sleeve versions. Both models share the same premium features (silicone waistband, lockdown loop, four-way stretch). The choice between short or long depends on personal preference and circumstances:

• Short Sleeve – ideal for warm gyms and maximum shoulder mobility
• Long Sleeve – ideal for full protection, cooler gyms, or as a base layer under a gi

Care

The Core Rash Guard is easy to care for. It’s machine washable and dryer safe, with no hassle. Wash on cold with similar colors to keep the color and print looking fresh for a long time. Avoid bleach and wash the rash guard inside out to protect the prints and silicone waistband. Wash the rash guard after every workout; this is essential for hygiene in grappling sports.

Color Options

Available in four classic colorways:

• Black – timeless and versatile, pairs with any fight shorts
• Red – a bright, eye-catching color with an energetic vibe
• Blue – sleek and professional
• Green – modern, sporty look

Specifications

• Material: 200 GSM, four-way stretch polyester/spandex blend
• Waistband: silicone-lined, non-slip hem
• Lockdown loop at the hem for attachment to fight shorts
• Bonded seam construction at the neck
• Reinforced flatlock stitching
• Moisture-wicking, quick-dry properties
• Machine washable and dryer safe

With the Hayabusa Men’s Core Long Sleeve Rash Guard, you’re choosing a rash guard that combines full arm coverage, a secure fit, and top-level performance. The ideal choice for any BJJ practitioner or MMA fighter who refuses to compromise on protection, comfort, and focus during training.

Do you have questions about the delivery of your order? First look carefully at the delivery time of your product. Below you will find an overview of the different products and delivery times. 

All products are immediately available

Orders that are immediately available and placed before 5:00 PM will be shipped the same day (Monday to Friday) from our warehouse and picked up by PostNL or DHL. You will receive a track & trace code the same day to follow your package. PostNL or DHL delivers the order the next day to the location of your choice in the Netherlands and Belgium. 

If you place an order for which all products are immediately available on Friday after 5:00 PM, Saturday or Sunday, we will ship it on Monday. In this case you will receive your order on Tuesday.

One or more products have a delivery time

In addition to our stock that is immediately available, we also have external stock. These products have a delivery time of 1 to 10 working days. This delivery time is indicated for each product in the availability. If you place an order with multiple products of which one or more products has a longer delivery time, this delivery time applies to the entire order. 

Punching bags & puzzle mats

Punching bags, puzzle mats and packages with different dimensions or weight are sent with an external courier service. This courier service works just like DHL with a tracking code to track your order. The delivery time for this is 1 to 2 working days.

Different delivery times apply for orders outside the Netherlands and Belgium. Via the track & trace code you will find current information regarding the delivery time of your package.