Pen Wiwar
Mynydd Mawr Relaxed Fit T-Shirt in Natural
Mynydd Mawr Relaxed Fit T-Shirt in Natural
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Known locally for the elephant-like shape of its profile, Mynydd Mawr is a distinctive part of the Eryri landscape and a mountain with a strong local identity.
Created as Pen Wiwar’s second collaboration with local artist Gwenno Llwyd, the design brings her interpretation to a peak with a strong connection to North Wales.
The Mynydd Mawr 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. Female model is 5'9" and wears a Small.
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 215 GSM 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.

Crys t hyfryd, braf gweld Mynydd Mawr mewn print . Lliw bywiog sy'n sefyll allan ac edrychiad modern.
Crys t lyfli dwi wrth fy modd gyda ansawdd y crys a braf cael llun o fynydd llai enwog ond llawer gwell na’r mynydd mwyaf! Diolch yn fawr 👍
Wrth fy modd hefo'r crys-t! Quality grêt ar cynllun Mynydd Mawr ac yr defnydd.
I love the t-shirt! Great quality on the design of Mynydd Mawr and the material.
Crys t gwych! Cynllun da a gwead ardderchog i'r defnydd.
A wonderful t-shirt! Excellent design and a wonderful feel to the fabric.