Men's T-Shirts

We’re confident you’ll love your Onnit supplements. If the product doesn't perform for you, however, we’re not gonna play games with you. Order any of our entry size supplements, and if you don’t like it, you can keep it! Notify our team, telling us why it wasn't a fit for you, and we’ll get you a refund right there on the spot - no return necessary. We just ask that you try it out for at least two weeks to give it a fair shot.

Our Keep-It™ guarantee is valid for the first-time purchase of a formula, and redeemable up to three months (90 days) after the purchase date. Multiple bottles, foods, apparel and gear do not fall under this guarantee, however, they may be applicable for return. Fitness equipment, personal care products, knowledge purchases, digital products, and DVDs are not eligible for return or refund. For more information and a full list of products that qualify, visit our Keep-It™ page. Further details can be found on our Refund Policy support page.

USA: Free shipping is offered on orders with a minimum subtotal of $100 less discounts. Free shipping is only available in the contiguous U.S. and excludes Fitness and Digital items.
Canada: USD $10 flat-rate shipping is offered on orders with a minimum subtotal of USD $100 less discounts. Excludes Fitness and Digital items.

For media inquiries please contact us at media@onnit.com.

With a subscription, you'll get your favorite Onnit products whenever you want at 15% off MSRP unless otherwise noted. All automatic, worry free, and with our same great money back guarantee.

Cancel or adjust your order at any time, hassle free. Your payment method will only be charged right before your order ships. The discount applied every time is 15% off MSRP (unless otherwise noted) or the current sale discount, whichever is greater. For more information, see the complete Onnit Subscription Terms & Conditions and Frequently Asked Questions.

We implement a variety of security measures to maintain the safety of your personal information when you place an order or enter, submit, or access any information on our website. We incorporate physical, electronic, and administrative procedures to safeguard the confidentiality of your personal information, including Secure Sockets Layer (SSL) for the encryption of all financial transactions through the website. We use industry-standard, 256bit SSL encryption to protect your personal information online, and we also take several steps to protect your personal information in our facilities. For example, when you visit the website, you access servers that are kept in a secure physical environment, behind a locked cage and a hardware firewall. After a transaction, your credit card information is not stored on our servers.

Men’s T-Shirts