Pen Wiwar
Cader Idris Relaxed Fit T-Shirt in Deep Blue
Cader Idris Relaxed Fit T-Shirt in Deep Blue
Methu â llwytho argaeledd casglu
Cader Idris is one of the most distinctive mountains in southern Eryri, with a landscape shaped by both legend and natural beauty.
Created in collaboration with local artist Tilly Butters, the artwork brings her own interpretation to one of Wales’ most recognisable peaks while remaining closely connected to the mountain itself.
The Cader Idris artwork features across the back, with the Pen Wiwar logo on the front.
Sizing & Fit
Sizing & Fit
This T-Shirt has a relaxed fit, so you should not normally need to size up. Male model is 6'0" and wears a Medium.
Our garments can vary slightly in fit depending on the style.
For full garment measurements and further guidance, please visit our Sizing Guide.
Materials & Sustainability
Materials & Sustainability
100% organic cotton. Heavyweight 6.5 oz fabric.
All Pen Wiwar clothing is vegan and printed using water-based inks.
We aim to make thoughtful choices around the materials and production methods used across our clothing, with a focus on lower-impact materials and creating pieces designed to last.
You can find out more about our approach on our Sustainability page.
Delivery & Returns
Delivery & Returns
We aim to package and dispatch orders within 1–2 working days.
Standard Delivery usually takes around 2 business days from dispatch, while Express Delivery usually takes around 1 business day.
Local collection is also available from Gwyndaf Williams Travel Agency in Felinheli. Select the collection option at checkout for full details.
Returns are accepted within 30 days, provided items are unworn, in their original condition and still have their tags attached. Exchanges are subject to stock availability.
For full delivery, collection and returns information, please visit our Delivery & Returns page.

A fabulous design from Dan & the team @ Pen Wiwar. The new blue design is gorgeous. I love the weight and quality of the Pen Wiwar tshirts & sweatshirts. Another one to add my collection of Brilliant north Wales mountain designs. Thank you Dan & team for the great service and my sticker!