HOME COLLECTIONS LITTLE DOLFIN COLLECTION UGLIES BOYS' BUILD ME UP SWIM TRUNK

Uglies Boys' Build Me Up Swim Trunk Style #8G01BU-E13

Splash into color and build yourself up for your next best swim with the Uglies Boy's Build Me Up Swim Trunk. Made from 100% polyester microfiber, this youth swim trunk is lightweight, quick-drying, and soft against the skin, making it ideal for long pool days. Designed with an elastic waistband for a secure and comfortable fit, training sessions, swim school, and casual days of poolside fun are effortless. Fun, durable, and full of personality, this trunk keeps young swimmers building their swim confidence.

Features & Benefits
  • Youth boys’ swim trunk in Build Me Up print
  • 100% polyester microfiber
  • Quick-drying, lightweight, and soft for comfort
  • Elastic waistband for secure, adjustable fit
  • Durable and chlorine-resistant for long-lasting wear
  • Flexible fit allows freedom of movement
  • Bright colored print for easy visibility in the water

Fabric Content: 100% Polyester Microfiber

Match this suit to your swim buddy or the whole family with Women's V-Back One Piece, Uglies Girls' One Piece, Men's Jammer, or Little Dolfin Boys' Swim Trunks and Little Dolfin Girls' One Piece.
Product Details
Splash into color and build yourself up for your next best swim with the Uglies Boy's Build Me Up Swim Trunk. Made from 100% polyester microfiber, this youth swim trunk is lightweight, quick-drying, and soft against the skin, making it ideal for long pool days. Designed with an elastic waistband for a secure and comfortable fit, training sessions, swim school, and casual days of poolside fun are effortless. Fun, durable, and full of personality, this trunk keeps young swimmers building their swim confidence.

Features & Benefits
  • Youth boys’ swim trunk in Build Me Up print
  • 100% polyester microfiber
  • Quick-drying, lightweight, and soft for comfort
  • Elastic waistband for secure, adjustable fit
  • Durable and chlorine-resistant for long-lasting wear
  • Flexible fit allows freedom of movement
  • Bright colored print for easy visibility in the water

Fabric Content: 100% Polyester Microfiber

Match this suit to your swim buddy or the whole family with Women's V-Back One Piece, Uglies Girls' One Piece, Men's Jammer, or Little Dolfin Boys' Swim Trunks and Little Dolfin Girls' One Piece.
Fit & Size

How to Measure

When an athlete's measurement contains a partial inch, always round up to the next full inch. If an athlete's measurements fall across two sizes, order the larger size.

  1. Chest Measurement

    Measure the chest with arms at the side. Be sure to take the measurement at the fullest part of the chest.
  2. Waist Measurement

    Measure the waist at the natural waistline which is the narrowest part of the waist. If you're having trouble locating the natural waist, have the athlete bend to the side. The natural waist is where the body bends.
  3. Hip Measurement

    Take the hip measurement at the fullest part of the buttocks with the athlete's feet together.
  4. Torso Measurement

    Take the torso measurement from the center of the shoulder, down the torso, through legs, and back to the shoulder.
  5. Inseam Measurement

    Take the leg inseam measure the athlete without shoes by running the tape from the crotch to one inch above the floor.
Sizing Illustration

The goal of measuring is to determine the correct size to order for each athlete. Accurate measurements are vital to the proper fit of your athlete's apparel. Please make sure that all athletes are wearing fitted workout apparel during the measurement session.


Fabric Care

Dolfin offers fabrics that are produced to meet our exclusive stretch and quality standards. We take tremendous pride in having the best fabrics in the industry. As the leader in performance apparel, it's important for us to advise you of the tendencies of certain fabrics, as well as practices to avoid. Show More

Shipping & Returns

For more information on our shipping click here

Dolfin Swimwear gladly accepts customer returns provided the following conditions are met:

  • All return requests must be sent no more than 30 days after shipment of merchandise.
  • Returns must be processed through Returns (dolfinswimwear.com) in order to be accepted.
  • Merchandise must not have been worn or laundered and must have all hang tags and sew-in tags attached in their original position and condition.
  • The customer is responsible for all shipping charges.

Stock items ordered with embellishments are considered customized and are non-returnable. The exception to this is in the case of a Manufacturers error or defect (Refer to Returns: Special Order Items section for more information.)