Old Navy biker shorts can be squat proof, but it depends on the specific style, fabric blend, color, and fit. Many of their performance options (especially those labeled for training or made with thicker, compressive material) hold up well during squats and lunges. However, lighter “buttery” fabrics, worn-in pairs, or shorts that are slightly too small are more likely to turn sheer when you bend.
Even high-quality biker shorts can fail the squat test if the fabric is overstretched. If your waistband feels tight, the seams look stressed, or the fabric looks slightly shiny across the hips and thighs, you’re more likely to get see-through coverage in a deep squat. Darker colors (black, navy, deep brown) tend to be more forgiving, while heathered or light shades may show more than expected under bright gym lighting.
Do a quick mirror test in the brightest light you have. Try a deep squat and a forward bend while wearing underwear that matches your skin tone (or whatever you’d actually wear to train). If you can see outlines or the fabric looks noticeably lighter where it stretches, consider sizing up or choosing a thicker, more compressive Old Navy fabric next time.
For the most reliable squat-proof feel, look for performance-oriented materials with compression and a substantial weight. A wider waistband and a double-layered gusset can also help. If you want a deeper breakdown of which Old Navy biker shorts tend to be more opaque and what to look for before buying, see the full guide here: https://glamorouswish.shop/are-old-biker-shorts-squat-proof/.
Sometimes, yes—if the fabric is overstretched, it can turn sheer. Choose the size that feels smooth (not shiny or strained) across the hips and thighs, and prioritize thicker, more compressive fabrics for the most coverage.
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