Singlet sizing typically goes by weight ranges. The material stretches significantly and should fit snugly. If the wrestler is taller, wider, or more muscular than average, sizing outside the standard range might be needed. For youth wrestlers, sizing up is often recommended to allow room for growth. Overall, the singlet should be tight enough to avoid bunching or shifting during matches but comfortable to move in.

High-cut singlets, which provide more coverage around the neck and armpits, are the most common in folkstyle and collegiate wrestling. Low-cut singlets, which have a lower neckline and thinner back strap, are more typical in freestyle and Greco-Roman wrestling. Female wrestlers often use a specially designed women’s cut for better fit and coverage. Most high schools require singlets that comply with state or association rules, often meaning a high cut style is standard. Singlets can be stock (standard colors/designs) or custom sublimated with personalized graphics, but must meet competition rules regarding color and design.

Wrestling singlets are made from a 80% Polyester / 20% Elastane blend, which provides excellent stretch, breathability, and moisture-wicking properties. This material allows for maximum athletic flexibility and movement while drying quickly and preventing rashes or burns common in wrestling.

Wrestlers are not required to wear anything under the singlet, and many opt for nothing to avoid restriction. Permitted undergarments include briefs, compression shorts (most common), jockstraps (less common now), rash guards (especially for female or younger wrestlers), and sports bras for female wrestlers. Loose-fitting boxers or t-shirts are generally not allowed unless for medical reasons such as skin conditions. Compression shorts are preferred for comfort, moisture control, and hygiene.

Singlets should be washed gently to maintain the fabric and printing. Avoid rough washing or drying methods, use cold water and mild detergents, and air dry to prevent damage such as fabric pilling, cracking, or fading of custom designs. Proper care helps singlets last throughout the season without shrinking or losing elasticity.

Many teams provide standard singlets with school colors and logos, but wrestlers often purchase their own. Custom sublimated singlets allow for personalized designs, colors, and logos using a printing process that won’t crack or fade. However, designs must comply with rules set by school or wrestling associations, which may restrict colors or branding for competition consistency.

For official matches, the singlet is typically required and is the standard uniform. Some practices and informal wrestling sessions may allow alternative clothing like compression shorts and tops or two-piece singlets (doublets), but these alternatives must be approved by coaches or wrestling governing bodies. Rules may vary by school or state association.

Newer options include two-piece singlets, also called doublets, which combine compression shorts and a compression top. These offer more coverage and may feel more comfortable and less exposing for some athletes. Some schools and organizations now allow these uniforms, especially for female wrestlers or those wanting extra coverage, but acceptance varies by region and event rules.