Underform is a premium men’s basics brand designed to help you feel dry, fresh and confident throughout the day. Our sweat-protective undershirts are made to be worn underneath shirts, polos, knitwear and workwear.

The Underform undershirt is designed with a hidden underarm layer that helps block visible sweat marks before they reach your outer shirt. The soft stretch fabric sits comfortably against the skin, while the underarm protection helps keep your outfit dry-looking.

No. Underform does not stop your body from sweating. Sweating is a natural process. Instead, Underform helps reduce the appearance of visible sweat marks on your outer clothing, so you can feel more confident during work, meetings, travel and everyday life.

Yes. Underform is designed to be worn under dress shirts, business shirts, polos, knitwear and other everyday outfits. The fit is made to stay close to the body so it remains comfortable and discreet underneath your clothing.

Underform is designed to be discreet. For the least visible look, choose the neckline that works best with your outfit. A V-neck is usually best under open-collar shirts, while a crew neck works well under fully buttoned shirts, jumpers or casual outfits.

Underform helps absorb moisture where sweat marks usually start. By helping manage sweat and keeping your outer clothing dry-looking, it can help you feel fresher throughout the day. However, it is not a medical treatment and does not replace deodorant or personal hygiene.

Yes. Underform is made for everyday use, especially moments where you want to look sharp and feel confident. It is suitable for workdays, meetings, commuting, travel, weddings, dinners, nights out and other occasions where visible sweat marks can be uncomfortable.

Underform should fit close to the body without feeling restrictive. A close fit helps the underarm protection sit in the right place and keeps the shirt discreet underneath your outer clothing.

We recommend choosing your usual T-shirt size. If you are between sizes, choose the smaller size for a closer fit or the larger size for a more relaxed feel.

For the best result, check the size guide on the product page before ordering.

If you prefer a tighter, more invisible fit under shirts, you may prefer sizing down. If you prefer more room around the body, choose your usual size or size up.

Underform is designed with stretch fabric to move with your body and provide a comfortable fit across different body types. The most important thing is choosing the size that gives you a close but comfortable fit.

Underform currently focuses on shipping to customers in the United Kingdom.

Delivery consists of two stages:

• Processing time: 1 to 3 business days.
• Shipping time: 5 to 10 business days within the United Kingdom.

Delivery times may be longer during busy periods such as Christmas, Black Friday and New Year.

Shipping is handled by Royal Mail or another suitable courier selected by Underform.

We offer free premium shipping. This includes insurance in case your parcel is stolen, lost or damaged during delivery.

Once your order has been shipped, you will receive an email with your tracking number. You can track your order through the tracking page on our website by clicking “Track Your Order” in the main menu.

It can take up to 5 business days for tracking information to update. If your tracking number still does not show any information after a few days, please contact our support team at support@underform.co.uk.

Yes. For logistical reasons, your order may be shipped in multiple separate parcels. If this happens, you may receive more than one tracking number.

Yes. You have the right to cancel your order within 14 days of receiving it. After notifying us that you wish to cancel, you have another 14 days to return the item.

To start a return, please contact us at support@underform.co.uk.

Returned items must be unused, unworn, unwashed, undamaged and, where reasonably possible, returned in their original packaging with all labels, tags and protective seals attached.

For hygiene reasons, we may refuse returns of undershirts, underwear or other hygiene-sensitive garments if the item has been worn, washed, damaged, stained, altered or if the hygiene seal has been broken after delivery.

This does not affect your statutory rights if the product is faulty, damaged or not as described.

Yes. Unless stated otherwise, the direct cost of returning the goods is your responsibility. We recommend using a tracked delivery service and keeping your proof of postage.

Once we have received your returned item, or you have provided evidence that you have returned it, we will process your refund as soon as possible and no later than 14 days.

Refunds are made using the same payment method used for the original transaction, unless agreed otherwise.

If your item arrives damaged, faulty or not as described, please contact us at support@underform.co.uk as soon as possible. Include your order number and clear photos of the issue so we can help you quickly.

If you need to change or cancel your order, please contact us as soon as possible at support@underform.co.uk. If your order has already been processed or shipped, we may not be able to make changes.

Please contact us immediately at support@underform.co.uk. If your order has not yet been processed, we will do our best to update the address. If the order has already been shipped, we may not be able to change the delivery address.

Available payment methods are shown at checkout. These may include major debit cards, credit cards and other secure payment options supported by our payment provider.

Yes. Payments are processed securely through our payment providers. Underform does not store full credit card details.

Always follow the care label inside the garment. As a general guideline, wash with similar colours, use a gentle cycle and avoid harsh detergents or bleach.

We recommend checking the care label before tumble drying. To help preserve the fit, feel and protective qualities of the garment, air drying is usually the safest option.

Please check the care label before ironing. If ironing is allowed, use a low temperature and avoid direct heat on any protective underarm areas.