Orders & Shipping
Find all the info you need about how and when your Onyx order will arrive — from processing times to tracking and delivery.
How long does it take to ship my order?
We do our best to process and ship all orders within 1–2 business days. Once your order is on its way, you'll receive a shipping confirmation with tracking info. Delivery time depends on your location, but we always aim to get your order to you as quickly as possible.
Can I track my order?
Absolutely! As soon as your order is shipped, you'll receive a tracking link via email so you can follow your package every step of the way.
What are the shipping costs?
Shipping costs are calculated during checkout based on your delivery address and chosen shipping method. We often offer free shipping on orders over a certain amount — keep an eye on our banners or newsletter for updates.
Do you ship internationally?
Yes, we ship worldwide! Whether you're in Europe, the US, or elsewhere — we've got you. International shipping times and fees may vary slightly depending on the country.
I haven't received my order. What should I do?
If your order seems delayed or tracking hasn't updated, please don't worry. Just send us an email at info@onyxs-portswear.nl , and we'll look into it right away to make sure your gear gets to you safely.
Sizing & Fit
Not sure which size to get? Here's everything you need to feel confident choosing the perfect fit for your body and your goals.
How do I choose the right size?
Each product has a custom size chart available on the product page. We always recommend checking it before ordering, especially if you're between sizes. Still unsure? Feel free to contact us — we're happy to help you choose the best fit.
Do your items run small or large?
Most of our products fit true to size, but this can vary slightly depending on the fabric and design. If an item runs small or oversized, we'll mention that in the product description.
Do you offer a size chart?
Yes — every product page has a size guide specific to that item so you can measure and compare for the perfect fit.
Returns & Exchanges
We get it — sometimes things don't work out. Read our return and exchange policy here so you know exactly what to expect.
Can I return my order?
Yes, we offer a 14-day return window from the date your order was delivered. The item must be unworn, unwashed, and with original tags attached.
How do I return an item?
Please check out our Returns page for all the details.
Can I exchange for another size or color?
Of course! As long as we have the item in stock, we're happy to help you exchange it. If not, we'll process a refund instead.
How long does a refund take?
Once we receive your return and inspect the item, your refund will be processed within 7 business days back to your original payment method.
Payment & Discounts
Questions about how to pay, what methods we accept, or how to apply a discount code? We've got you covered.
What payment methods do you accept?
We currently accept iDEAL, PayPal and Apple Pay. At this moment, Klarna (Pay Later) is not available — but we're working on adding it soon!
Can I pay later?
Yes! With Klarna (Pay Later) you can choose to pay after receiving your order. This gives you extra flexibility and peace of mind when shopping with us.
How do I use a discount code?
You can enter your discount code during checkout in the designated box. Please make sure to apply it before completing your order — only one code can be used per purchase.
Are there any current promotions?
We regularly run exclusive offers and early access drops for our community. Be sure to sign up for our newsletter or follow us on Instagram @onyxsportswear.nl to stay updated.
Product Information
Curious about our fabrics, logo finishes, or how to care for your items? Here you'll find all the details on product quality and care.
What materials are your products made from?
Our pieces are crafted from high-performance fabrics like nylon and spandex blends, designed to move with you, wick sweat, and support your body in all the right places.
Are your leggings squat-proof?
Yes! All our leggings go through stretch and opacity testing to ensure they're 100% squat-proof, so you can train with total confidence.
How should I wash your items?
We recommend turning your items inside out, washing cold, and letting them air dry. Avoid fabric softener and tumble drying to preserve elasticity and logo quality.
Are the logos heat sealed or silicone?
It depends on the product. Some items have a clean heat-transfer logo, while others feature raised silicone branding for a premium finish. Check each product description for details.
Are your items sustainably made?
We're committed to mindful production. We work with trusted partners and continuously look for ways to reduce waste, improve fabric sourcing, and make choices that are better for people and planet.
Account & Support
Need help with your account or have a general question? Start here — and if it's not listed, we're always just an email away.
Do I need an account to place an order?
Nope! You can check out as a guest. But creating an account makes it easier to track orders, manage returns, and access your order history.
How can I contact you?
Email us at info@onyxsportswear.nl or use the contact form on our website. We aim to respond within 24 hours on business days.
My question isn't listed. What now?
No problem — reach out to us directly. We're always happy to help with anything from sizing to restocks or special requests.
Couldn't find your answer?
Need help? We've got you! If you didn't find what you were looking for, feel free to reach out. Our team is ready to assist you.