Swallow Tank
Size Guide
Port Royal Supply Co. Size Guide
Finding the right fit should feel easy. Our size guide is here to help you choose the best size across Port Royal Supply styles, from everyday tees to performance shirts and boardshorts. Measurements are approximate and may vary slightly by style.shopify+1
We recommend comparing the measurements below to a shirt or pair of shorts you already own and love. Lay the garment flat, measure it, and match it to the closest size for the most accurate fit.
How to measure
Tops
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Chest width: Measure straight across the chest, 1 inch below the armhole, from side to side.
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Body length: Measure from the highest point of the shoulder down to the bottom hem.
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Sleeve length: Measure from the shoulder seam to the sleeve opening, if applicable.
Boardshorts
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Waist: Measure across the waistband while laid flat, then double it for full waist measurement.
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Outseam: Measure from the top of the waistband to the bottom hem on the outer leg.
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Inseam: Measure from the crotch seam to the bottom hem.
Tees and long sleeves
Our standard tees and long sleeves are designed for an easy, everyday fit. If you are between sizes and prefer a more relaxed feel, we recommend sizing up.
Fit note: True to size with a comfortable, casual fit made for everyday wear on and off the water.
Performance shirts
Our performance shirts are built for movement, sun coverage, and long days outside. Depending on the fabric blend and intended use, performance styles may feel slightly more athletic through the shoulders and chest than a standard cotton tee, so refer to the individual product description for style-specific fit notes.
Fit note: Designed for active use. If you like a looser fit for fishing, boating, or all-day sun coverage, consider sizing up.
Boardshorts
Our boardshorts are sized by waist and built for comfort in and around the water. If you are between sizes, choose based on how you prefer your waistband to sit, especially for non-stretch waist styles.
Fit note: Built for a clean surf fit. Check each product page for stretch, waistband construction, and outseam details.
Description
• 100% combed ring-spun cotton
• Athletic Heather is 85% cotton, 15% viscose
• Charcoal Heather is 60% polyester, 40% cotton
• Fabric weight: 5.5 oz/yd² (186.48 g/m²)
• Soft-washed and tight-knit mid/heavyweight material
• Relaxed fit
• Extra soft surface
• Sleeveless drop arm
This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!
Shipping and Returns
Shipping cost is based on weight. Just add products to your cart and use the Shipping Calculator to see the shipping price.
If you have any questions about fit, sizing, or product details, please reach out anytime — we’re always happy to help you find the right size.
We want you to be happy with your purchase. We currently offer exchanges for items that are unworn, unwashed, and undamaged, with original tags attached where applicable.
To request an exchange, please contact us within 30 days of receiving your order at portroyalsurf@gmail.com and include your order number, the item you’d like to exchange, and the size you need instead. Once your request is approved, we’ll provide the next steps.
Please note:
- Items must be unworn, unwashed, and undamaged.
- Items must be returned in original condition.
- Final sale items are not eligible for exchange.
- Shipping costs may not be refundable.
Quality Guarantee
We stand behind the quality of every product we create. If your order arrives damaged, defective, or not as described, please contact us within 30 days of receiving your order at portroyalsurf@gmail.com with the following:
- Your order number
- A brief description of the issue
- Clear photos of the defect or damage
Once approved, we’ll happily replace the item at no additional cost.