Product Questions

What materials are your rash guards made from?

Our rash guards are crafted from premium performance fabrics designed for durability and comfort during intense training. They feature moisture-wicking technology and reinforced stitching to withstand the demands of martial arts practice.

How do I choose the right size for apparel?

We recommend consulting our size charts available on each product page. Our rash guards are designed for a compression fit. If you're between sizes, we suggest sizing up for a more comfortable fit. For hoodies and tees, we offer a more relaxed athletic fit.

Are your supplements third-party tested?

Yes, all our supplements undergo rigorous third-party testing to ensure quality, purity, and potency. We're committed to providing safe, effective products that support your training and performance goals.

What's the difference between your pre-workout formulas?

Our pre-workout supplements are formulated to enhance energy, focus, and endurance during training. Each product page includes detailed ingredient information and recommended usage to help you choose the right formula for your needs.

Can I mix different supplements together?

Many of our supplements can be safely combined, such as BCAAs with creatine or pre-workout with hydration products. However, we recommend reviewing the ingredient lists and consulting with a healthcare professional if you have specific concerns.

Shipping & Fulfillment

How long does shipping take?

Shipping times vary based on your location and the products ordered. Most orders ship within 1-3 business days from our US-based fulfillment centers. Standard shipping typically takes 3-7 business days, while expedited options are available at checkout.

Do you ship internationally?

Currently, we primarily serve customers within the United States. Please contact us for international shipping inquiries.

Why do some items ship separately?

We use multiple fulfillment locations to get your order to you as quickly as possible. Print-on-demand items and supplements may ship from different facilities, which means you might receive multiple packages for a single order.

How can I track my order?

Once your order ships, you'll receive a confirmation email with tracking information. You can also track your order status by logging into your account on our website.

Returns & Exchanges

What is your return policy?

We want you to be completely satisfied with your purchase. Apparel items can be returned within 30 days of delivery for a refund or exchange, provided they're unworn, unwashed, and in original condition with tags attached.

Can I return supplements?

Due to health and safety regulations, we cannot accept returns on opened supplement products. Unopened supplements may be returned within 30 days of delivery. Please contact our customer service team if you have concerns about a supplement product.

How do I initiate a return or exchange?

Contact our customer service team with your order number and the items you'd like to return or exchange. We'll provide you with return instructions and a prepaid shipping label when applicable.

What if my item arrives damaged or defective?

We stand behind the quality of our products. If you receive a damaged or defective item, please contact us within 7 days of delivery with photos of the issue. We'll arrange for a replacement or full refund.

Product Care

How should I care for my rash guard?

To extend the life of your rash guard, rinse it in cold water after each use and hang dry. Machine wash cold on gentle cycle when needed. Avoid fabric softeners, bleach, and high heat, as these can damage the performance fabric and graphics.

Will the designs fade or peel?

Our premium printing techniques are designed for durability. When cared for properly according to our instructions, your graphics should maintain their quality through many training sessions and washes.

Orders & Payment

What payment methods do you accept?

We accept all major credit cards, debit cards, and other secure payment methods available at checkout through Shopify's secure payment system.

Can I modify or cancel my order?

Please contact us immediately if you need to modify or cancel your order. Once an order has been processed and shipped, we cannot make changes, but we're happy to help with returns or exchanges.

Do you offer bulk or team discounts?

Yes! We offer special pricing for teams and bulk orders. Please contact us with details about your team size and needs for a custom quote.

About Our Brand

What does Renshuu Republic stand for?

Renshuu means "practice" in Japanese. We're built on the philosophy of continuous improvement and dedication to the martial arts journey. Our products are designed for athletes who value quality, performance, and the relentless pursuit of excellence.

Where are your products made?

We work with trusted manufacturing partners to ensure the highest quality standards. Our apparel is produced using premium materials and printing techniques, while our supplements are manufactured in certified facilities that meet strict quality and safety standards.

Still Have Questions?

If you didn't find the answer you're looking for, please don't hesitate to reach out. Contact our customer service team and we'll be happy to help.