Blythe Drawstring Swim Shorts


A timeless laidback style with a comfortable fit.

Leaves Black Print

See Product Measurements

Fabric: 100% recycled polyester

Mesh: 100% recycled polyester

Stitching + cord: 100% recycled polyester

Button: corozo nut


Regular Fit, Mid-length: 16” Outseam

Size up if you are between two sizes

Elasticated waist flexes approximately 2-3 inches.

See Product Measurements

Elasticated drawstring waist

Slanted side pockets with mesh drainage

Printed internal branding for comfort

Mesh brief inner liner

Inner coin pocket

Buttoned back flap pocket with mesh drainage

Clothing Care

Hand wash for lower impact, or wash 30°C. Hang dry. Do not spin, do not tumble. Ideally Use a Microfibre Washing Bag.

Group 21

Free UK delivery 3-5 working days from dispatch


A timeless laidback style, Riz's classic drawstring swim shorts. Brushed, quick-drying twill provides softness and comfort. Minimal styling. Relaxed fit. Lined with a supportive mesh brief, they have side pockets, a small inner coin pocket and buttoned back pocket.

Riz's mission is to make 'The most beautiful and sustainable surf shorts in the world'. Made from recycled PET bottles, using Saville Row tailoring and designing beautiful textile patterns inspired by endangered species. 


  • Regular Fit, Mid-length: 16” Outseam
  • Size up if you are between two sizes
  • Elasticated waist flexes approximately 2-3 inches.

Check 'Size Guide' below to ensure you choose your correct size



Measurements in CM





1. Golden rule - please measure your waist so you know your true size.

2. It's helpful to take measurements from your old favourite shorts and compare against this size chart.


Please email if you have further questions on size or fit. 

Product Footprint

Product Footprint

Strong Points

Circular business model 

Recycled materials

B-Corp member

Riz Blythe Drawstring Swim Shorts footprint


Riz have longterm relationships with their factory in Portugal and digital printers in the UK. To their knowledge workers are treated well and remunerated fairly. It has not been feasible to carry out their own assessment of their fabric supplier so they rely on their reputation and independent certifications.

The shorts are cut and sewn in Portugal, in a small, family run factory  who have a longstanding reputation in the Portuguese garment industry. The Fair Wear Foundation considers Portugal a low risk country with properly functioning institutions (trade unions, labour legislation, labour inspection) which should lead to compliance with basic standards. However the 2008 economic crisis has put pressure on the industry and FWF recommends performing regular visits to suppliers to ensure that international standards and labour laws are respected. Riz visit Sergil occasionally and plan to visit again this year.


Using recycled polyester has several environmental benefits. As traditional polyester is made from petroleum, using recycled fibres greatly reduces the fossil fuel-based inputs needed to manufacture polyester. Whilst also helping to divert old garments from landfills – in perpetuity! Compared to incinerating old garments and extracting and transporting virgin raw materials (oil and natural gas) using recycled polyester can reduce CO2 emissions by 71%. (Patagonia Common Threads)

Riz are pioneers of a circular business model. They make shorts from recycled materials that will last a really long time, and then reduce waste through repair, rewear and finally recycling. 

Country of origin


Shorts cut and sewn: Portugal (EU legislation)

Recycle Polyester Yarn (RePET®): Libolon (Bluesign, GRS, OEKO-TEX, Local Green Mark)

Digital printing: RA Smart, Macclesfield, UK

Areas For Development

In 2018 Riz became a certified B Corp (and 1% for The Planet) member with the aim to create a framework to continually improve the brands social and environmental impact. Ali Murrel, Riz co-founder shared with Brothers We Stand, “We will continue to improve our sourcing, building on the work we did with the Blue Capsule and will focus more on the social impact of our supply chain.” 

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