No problem at all, it happens, especially with sizes.

Just post it back to us and we'll refund you. You've got 14 days from when your order arrives to let us know you'd like to return something, and another 14 days to get it in the post.

All we ask is that it comes back to us unworn and unwashed, with the tags still on and the packaging in one piece. We know it's tempting to rip the bag open, but we do have to be able to sell it on, so please open it gently. Trying something on to check the fit is absolutely fine.

Pop our returns form in the parcel if you can print it. If you haven't got a printer, don't worry, a handwritten note is perfectly fine. Just jot down your name, the email address you ordered with, your order number, and what you're sending back.

Send it to:
School Wear United, FAO Returns Department, 3 Crown Dale, London, SE19 3PB

One tip: use a tracked service and hang on to your receipt. The parcel is your responsibility until it reaches us, so it's worth having proof it's on its way.

A quick heads up: for hygiene reasons we can't take back underwear, socks, tights, base layers or swimwear once they've been opened, unless there's something wrong with them, of course.

Have a look at the product page for whatever you're buying. Every item lists the sizes it comes in along with the actual measurements. Depending on what it is, that'll be an age (5 to 6 years, say), a collar size for shirts, or a waist and inside leg for trousers.

Our honest advice: grab a tape measure rather than going purely on age. Two children the same age can be completely different shapes, and it saves the hassle of sending something back.

It's also worth checking each product page rather than assuming. Sizes do vary a bit between styles and brands, so a 9 to 10 in one thing won't always match a 9 to 10 in another.

And if you're still not sure, just ask us. Tell us the item and your child's age or measurements and we'll point you to the right one.

We usually get orders packed and out the door within 1 to 2 working days. The delivery clock starts from then, not from when you place the order.

Spend over £75 and Economy delivery is on us, after any discount, for UK addresses.

Just so there's no confusion: we don't offer a next day or named day service. Premium Express is the quickest we go.

You'll get a tracking number as soon as your order is on its way. If you'd rather we just checked for you, message us with your order number and the postcode or email you used, and we'll take a look.

We don't do swaps by post, but here's the good news: you don't have to wait for us to receive your return before you order the right size.

Just send the wrong size back for a refund and place a new order for the size you need straight away. That way the correct one is on its way to you now, rather than sitting in a queue while two parcels pass each other in the post.

Not sure which size to go for? Message us before you order. Tell us the item and your child's age or measurements and we'll tell you exactly what's available and what we'd go for.

If you've changed your mind or need a different size, the postage to send it back is down to you, and the delivery charge from your original order isn't refunded. You'll get back what you paid for the items themselves.

We're also not able to give out returns QR codes or prepaid labels, so you'll need to pop to the Post Office or a parcel shop and choose whichever service suits you.

If something's faulty, or we've sent you the wrong thing, that's a different story. That one's on us. Send it back and we'll cover your return postage up to the standard Second Class rate, so you're not left out of pocket for our mistake.

Once your parcel reaches us, we'll have your refund sorted within 14 days. In the thick of the back to school rush it can take us a little longer, so please bear with us if it's August.

Worth knowing: you probably won't get a separate message saying your parcel has landed with us. The one to look out for is the refund confirmation, that's your sign it's all gone through. After that, it usually takes another 3 to 5 working days to show up in your account, depending on your bank.

Keep your proof of postage safe until the money's back with you. And if it's been more than 14 days since your return was delivered to us and you've heard nothing, give us a shout and we'll chase it up for you.