Underdays Reviews 104

Great product, extremely comfortable and feel fresh to wear

I thought these looked great in the advert. I was looking for soft, comfortable thongs for the gym and that couldn't be seen through the leggings.
They are not comfortable. The 'under' area is so thin and the seams are not nice which rides in! The material is lovely and you can't see them through the leggings but I could've got that from M&S. Not exactly WOW! Not worth the big price tag!

Fast shipping, high quality and oh so comfortable just keep the colours coming especially in the high waisted!

Bought this underwear for the first time a few months ago and now I just want to get more. It truly feels like I am not wearing anything, they are breathable, comfortable... I didn't wear thongs before and I love them now.
The colours are fun and they fit perfect. I am sold.
I wish you did matching bras.

I love this brand. Such good quality material and super soft. Almost like you’re not wearing anything! It would be awesome if the brand did matching bras or little tops (like they do the workout set).

The comfiest and most flattering underwear I've worn! I've done multiple orders and won't buy anything else

The only underwear I’ll buy now. Washes well and quick shipping. Great colour options.

Really pleased with these products, I have purchased 10 pairs now and they are very comfortable and wash well.

Love this underwear. So comfortable and versatile for wearing with all sorts of outfits. Purchase every new colour as soon as they launch!

Just received my order. The grey underwear looks nothing like in the pictures and adverts. They are really see through. So overpriced. Not worth it!

Absolutely love these knickers! Bought some a few weeks ago to try and have already reordered. I like a high waisted brief and these are great - just the right amount of fabric and not too mumsy!

Please make more colours!

Beautiful and super comfy

I made an order a week ago and still have no news about the parcel or any answers from the company. I am going to cancel the payment right now, and I advise to not buy with them.

I reviewed in September 2025 to say how annoying it is to finally find a good fitting Cheeky and to be told that sizes XL and Xxl in any colour are out of stock 6 months. Now been nearly a year. Why do you keep advertising all sizes when you clearly have NO intention of stocking XL or XXL in cheeky in any colour! Just say you don’t stock those sizes any more. Stop saying you are waiting for stock and stop telling me you can offer me a different style in XL when it’s the cheeky I want

Ordered a gift from Underdays before Christmas - the tracking displayed it delivered to a different building in my area but one I can't access.

Queried this through their WhatsApp AI - and it has been telling me to wait for weeks. Cant find another way to contact them. Huge mess around.

Love these pants. I’ve bought them for all my daughters as well as replacing my own knicker drawer with them! Cannot recommend them more highly.

So lightweight, breathable and comfortable, very good quality

The quality of the product is excellent, they are so comfy and fit perfectly. I won’t have any other knickers in my drawer !

Amazing quality, so comfy on. Perfect for lounging or working out

Wonderful knickers, excellent customer service! I had seen a few adverts for Underdays before I decided to place an order. I’m so glad I did! The material feels lovely, the colours are pretty, and the fit is fabulous. I also like that they make several styles, to fit a wide range of preference and size. The size guidance is also accurate - the medium size recommended fits me perfectly. Every time I order, I add another pair - I’ve gone from an order for two pairs, to three, and now to four! The packaging is compact, (fits through the letter box) easy to recycle, and the shipping is very quick. So far, I am impressed.