Blue camouflage shorts on a white background
Southern Marsh La Costa Lined Swim Trunk Washed Slate Birkdale

Southern Marsh La Costa Lined Swim Trunk Washed Slate Birkdale

$27.50
$27.50
$55.00
Sold Out

Size: YS 6/7

Southern Marsh La Costa Lined Swim Trunk Washed Slate Birkdale

Built for days that start in the water and end on shore. The Southern Marsh Youth La Costa Lined Swim Trunk in Washed Slate Birkdale features a subtle camo-inspired Birkdale pattern in washed slate tones — a versatile look that feels right at home at the dock, the beach, or the backyard. Made from lightweight, quick-dry polyester with a stretchy brief liner, belt loops, and a drawstring waistband for a secure, easy fit all day long.

Product Details

  • Age Range | Ages 4–14 / Sizes XXS–XL — Youth Fit
  • Color | Washed Slate Birkdale (Camo-Inspired Pattern)
  • Shell | 100% Polyester — lightweight and quick-dry
  • Liner | 95% Polyester / 5% Elastane stretchy brief liner
  • Construction | Belt loops, drawstring waistband, side and back pockets
  • Branding | Signature Southern Marsh branding
  • Care Instructions | Machine wash cold, tumble dry low

Why Kids Love It

  • Subtle Birkdale camo pattern in washed slate gives a rugged, outdoorsy look without being loud — works from the pool to the trail
  • Quick-dry fabric and stretchy brief liner keep them comfortable from cannonballs to drying off in the sun
  • Belt loops, drawstring waistband, and pockets make these trunks as functional as they are sharp

Perfect For

  • Beach days, lake trips, pool parties, backyard water play, and outdoor summer adventures
  • Boys sizes XXS–XL (ages 4–14) who love the water and Southern Marsh outdoor style
  • Birthday gifts, holiday gifting, and summer shopping for active, outdoorsy kids

Return Policy


Products can be exchanged within 14 Days of purchase as long as tag is attached in original condition. We offer exchanges or store credit for full priced items. Sale items are final sale. If you are not satisfied with your purchase the customer can ship the items back to the store for an exchange or store credit.

Shipping Policy


All orders are processed within 1-2 business days. Orders are not shipped or delivered on holidays. Cost of shipping will vary due to location and weight. See shipping choices by carrier at check-out. Please contact the postal service if your package becomes lost or stolen, where as it is out of our control once we ship it out.