Elasticated Relaxed Fit Pyjama Trousers - Sidewinder Blueberry
- Pyjamas that are too good to keep indoors!
- Blueberry is our best selling colourway
- Like us, our sizing is Irregular - it's the slow fashion way but we're here to help 💚
Learn more

Elasticated waist with adjustable drawstring

Deep side pockets with twin needle stitching

Wide leg
About Elasticated Relaxed Fit Pyjama Trousers - Sidewinder Blueberry
With twin needle stitching, our GOTS organic cotton relaxed fit PJ trousers feature a generous volume of fabric in the leg, are designed to be slightly cropped at the ankle, have no fly, side pockets and a wide elasticated waistband, all resulting in a beautiful comfort fit.
Sizes 5, 6 and 7 feature a gusset for extra relaxed movement.
The organic cotton across our pyjamas, nightshirts + robes is pre-shrunk (so won't shrink further) and can be washed at up to 40 °C. We recommend washing at 30°C with similar colours.
Size Guide for Elasticated Relaxed Fit Pyjama Trousers - Sidewinder Blueberry
Why is our sizing so confusing? Click here for a 60 second video from Jolene
We use custom sizing for our sleepwear, so be sure to check our detailed size charts. For the best fit, grab a tape measure and measure both your waist and the widest part of your bottom/hips.
Our elasticated wide legged trousers are designed to be worn loose + low, and feature robust elastic that won't twist after one wear, as well as a drawstring. The elasticated trousers are longer in the leg that our high waisted (which are designed to be ankle skimming). All our trousers have been constructed with a 10cm internal cuff at the hem which can be let down for extra length, or of course turned up...
We also recommend browsing our joyful BODY LIBRARY, created to show our products on a range of bodies, one of which might look a bit like yours.
If in doubt, please get in touch - we will be delighted to help.
This size chart is based on body measurements and includes a comfort allowance for fit. For exact garment measurements, please see the 'Garment Size' page above.
Waist Circumference (max) | Hip Circumference (max) | UK Women | UK Men | |
---|---|---|---|---|
Size 0 | 68cm | 88cm | 6 | XXS |
Size 1 | 73cm | 96cm | 8-10 | XS |
Size 2 | 79cm | 102cm | 10-12 | S |
Size 3 | 89cm | 110cm | 12-14 | M |
Size 4 | 99cm | 117cm | 16-18 | L |
Size 5 | 109cm | 132cm | 18-20 | XL-2XL |
Size 6 | 119cm | 147cm | 20-22 | 2XL-3XL |
Size 7 | 129cm | 151cm | 22-24 | 3XL-4XL |
This size chart is based on body measurements and includes a comfort allowance for fit. For exact garment measurements, please see the 'Garment Size' page above.
Waist Circumference (max) | Hip Circumference (max) | UK Women | UK Men | |
---|---|---|---|---|
Size 0 | 27" | 34.5" | 6 | XXS |
Size 1 | 29" | 37.5" | 8-10 | XS |
Size 2 | 31" | 40" | 10-12 | S |
Size 3 | 35" | 43" | 12-14 | M |
Size 4 | 39" | 46" | 16-18 | L |
Size 5 | 43" | 52" | 18-20 | XL-2XL |
Size 6 | 47" | 58" | 20-22 | 2XL-3XL |
Size 7 | 51" | 59.5" | 22-24 | 3XL-4XL |

A - Chest / Bust
The chest size is measured around widest point of chest / bust
B - Waist
The waist size is measured around the narrowest part of the waist
C - Hip
The hip measurement is taken from the widest part of the hip
D - Inside Leg
The inside leg measurement is taken from the crotch to the floor
The following size chart shows the actual garment measurements (not body measurements) to help you find the best fit. For sizing advice based on body measurements, please refer to the 'Body Size' page above.
Waist Circumference stretched | Waist Circumference relaxed | Hip Circumference | Inseam length | UK Women | UK Men | |
---|---|---|---|---|---|---|
Size 0 | 89cm | 62cm | 102cm | 64cm | 6 | XXS |
Size 1 | 97cm | 64cm | 108cm | 66cm | 8-10 | XS |
Size 2 | 103cm | 76cm | 119cm | 68cm | 10-12 | S |
Size 3 | 111cm | 78cm | 130cm | 70cm | 12-14 | M |
Size 4 | 118cm | 80cm | 137cm | 70cm | 16-18 | L |
Size 5 | 133cm | 86cm | 144cm | 70cm | 18-20 | XL-2XL |
Size 6 | 148cm | 92cm | 148cm | 70cm | 20-22 | 2XL-3XL |
Size 7 | 152cm | 100cm | 152cm | 70cm | 22-24 | 3XL-4XL |
The following size chart shows the actual garment measurements (not body measurements) to help you find the best fit. For sizing advice based on body measurements, please refer to the 'Body Size' page above.
Waist Circumference stretched | Waist Circumference relaxed | Hip Circumference | Inseam length | UK Women | UK Men | |
---|---|---|---|---|---|---|
Size 0 | 35" | 24.5" | 40" | 25" | 6 | XXS |
Size 1 | 38" | 25" | 42.5" | 26" | 8-10 | XS |
Size 2 | 40.5" | 30" | 47" | 27" | 10-12 | S |
Size 3 | 43.5" | 30.5" | 51" | 27.5" | 12-14 | M |
Size 4 | 46.5" | 31" | 54" | 27.5" | 16-18 | L |
Size 5 | 52" | 34" | 56.5" | 27.5" | 18-20 | XL-2XL |
Size 6 | 58" | 36" | 58" | 27.5" | 20-22 | 2XL-3XL |
Size 7 | 60" | 39" | 60" | 27.5" | 22-24 | 3XL-4XL |
Delivery & Returns
Delivery
- Free Delivery in UK over £100
- Under £100 in UK £4.19 Royal Mail tracked 48 2-3 working days
- Under £40 in UK £2.30 Royal Mail second class 2-3 working days
- £12 express delivery (DHL) in UK 1-2 working days
- USA, Japan, Australia, New Zealand, shipping is free for orders over £200
- Otherwise $27 economy shipping to USA, Canada, Japan via Royal Mail 10-20 days*
- Express shipping to USA with DHL is $41 2-3 working days*
- Express shipping to Australia, New Zealand & Japan available for £50 3-5 working days*
* can vary based on customs clearance delays
- Customers in Europe: We are still having issues and are working on a solution.
- International Shipping to rest of the world: please contact us for a quote
- NB: For International Orders, please note that depending on your order and country, you may be liable to pay local taxes and duties on receipt of your order, for which we cannot accept liability. The refusal of payment of such fees causes a full cancellation of the order. Transportation cost and custom clearance cost associated with a cancellation will be deducted from the amount refunded to you.
Returns
- Size exchanges within the UK are free of charge. Please head to our returns portal. Returns will incur a £4 fee which will be deducted from your refund.
- You have 28 days from receipt of goods to return your garment(s) to us. Items should be returned new, unused, FOLDED and with all tags attached and in original packaging. Please note that after 28 days, we are only able to offer an exchange or credit note. Unfortunately, we cannot process refunds for any items returned outside of this time frame.
- If you are overseas please be aware that returning a garment will be very expensive, and we don’t cover the cost of sending out a replacement in the case of exchange, so please check in with us on sizing before you make your purchase!
- If there is a fault with your garment, please get in touch and we will resolve the issue.
I absolutely love them and will be making more purchases!!!
I had to return because they didn't fit BUT. They are so well made. The material is beautiful. Top quality and the usual style of the cut with the slightly high back is super flattering. I'm a funny ol shape so they didn't fit but I'll be exploring other sizes and fully intend to reorder. Definitely 5 star . Jolene s communication was amazing .
I ordered a sidewinder set before a trip so wasn’t expecting it would necessarily reach me overseas before I left. Even though ISP had a sale on for another style at the time, they shipped my order promptly and it has arrived before I leave.
I love the colour-way and am enjoying styling the set together and as separates. It would a crime for something this beautiful to be relegated to night time only and never leave the house.
Such amazing designs and rich colours. I love the high waisted pants - very comfortable and the higher back has great structure, feels supportive on lower back and looks cool. And customers service was just perfect - Jolene was very helpful and responded fast to some questions I had about the order. Love this independent business!
Iwona
@iwonakozielglass
So pleased with my Sidewinder jacket. I've been wearing it as a light jacket during this sunny weather and it's perfect for jazzing up an outfit. Great for a light layer if you want to cover up from the sun. I've had so many compliments!
I usually wear UK 18-20 and I went for a size 4 which fits great done up or open, although I do need to roll the sleeves up a bit but I think that adds to the look.
It's super high quality, impressed with the finishing, and has washed really well so far.