BOA Men's 3" Half Split Shorts: Sizing and Care
By BOA | Running Shorts & Apparel | Made in the USA | Published: 2026-10-28
Category: Tips & Care
Learn how to size and care for BOA's Men's Solid 3" Half Split Trainer Shorts. Get fit tips, washing steps, and common mistakes to avoid for lasting performance.
Quick answer
For the best fit, choose your usual waist size and use the drawstring to fine-tune; wash in cold water and hang dry to keep the moisture-wicking fabric performing.
Why sizing matters for 3-inch shorts
A 3-inch inseam sits higher on the leg than longer shorts, so the waistband and liner do more of the work to keep the short in place. The elastic waistband and adjustable drawstring give you room to adjust, but the built-in mesh liner should feel snug without digging in. If you are between sizes, consider how much movement you need—mid side splits add freedom, but a too-loose waist can let the liner shift during a run.
Trade-off: liner fit vs. outer short fit
Because the liner is built in, you cannot size up just to make the outer short feel looser without affecting how the liner sits. A larger size may feel comfortable at the waist but leave the liner baggy, which can cause chafing. Conversely, a smaller size might feel secure but too tight in the leg openings. Stick with your normal waist size first, then use the drawstring to adjust—this preserves the liner's intended support.
How to size and care for your 3" half split shorts
- Measure your waist: Use a soft tape measure around your natural waist, where the shorts will sit. Compare that number to the brand's size chart. If your measurement falls between sizes, size up for a looser feel or down for a more secure fit—but remember the liner will follow that choice. Your waist measurement is the starting point, not the final answer.
- Check the liner fit: Put the shorts on and move around—squat, lunge, and jog in place. The mesh liner should stay in place without riding up or feeling tight. If the liner digs in, size up; if it feels loose, size down. The drawstring can adjust the waist, but it cannot fix a liner that is the wrong size. The liner is the real fit test, so move before you decide.
- Wash in cold water: Turn the shorts inside out and wash in cold water on a gentle cycle. Use a mild detergent and skip fabric softener, which can coat the moisture-wicking fibers and reduce their effectiveness. Avoid bleach and hot water, which can break down the elastic and fabric over time. Cold water and mild detergent keep the moisture-wicking tech working.
- Hang dry, never tumble dry: Air dry the shorts by hanging them in a well-ventilated area out of direct sunlight. High heat from a dryer can damage the elastic waistband and the mesh liner, causing them to lose their shape. If you must use a dryer, choose the lowest heat setting and remove the shorts while still slightly damp. Hang drying is the safest way to preserve the fit and fabric.
- Store flat or folded: Fold the shorts and store them in a drawer or on a shelf, avoiding tight folding that can crease the fabric. Do not hang them by the waistband for long periods, as the weight can stretch the elastic. Keep them away from direct heat sources. Proper storage prevents stretching and keeps the shorts ready for your next run.
Product facts
- Men's Solid 3" Half Split Trainer Shorts - Red: The BOA 3” Half Split Trainer features lightweight moisture wicking fabric to keep you cool and performing at the highest level. Moisture-wicking fabric pulls sweat away from your skin, so the short stays light and comfortable during a run.
Men's Solid 3" Half Split Trainer Shorts - Red - Men's Solid 3" Half Split Trainer Shorts - Red: The built in smooth mesh liner is comfortable and moisture wicking. A smooth, moisture-wicking liner reduces friction and helps prevent chafing, so you can move freely without irritation.
