Bayside 3420 Women's USA-Made Thermal Long Sleeve T-Shirt – 5 oz. Poly-Cotton Thermal Tee | XS–2XL

The Bayside 3420 Women's USA-Made Thermal Long Sleeve T-Shirt is a soft thermal top built on a 5 oz. poly-cotton blend with a thermal knit structure — providing warm-weather-season layering performance and the textured surface feel of a classic thermal undershirt in a women's silhouette and American-made construction. At 5 oz., this thermal sits between a lightweight long-sleeve tee and a mid-layer shirt in weight and warmth.

The thermal knit construction creates a waffle or grid-textured surface on the fabric interior that traps air and provides insulation significantly greater than a plain-knit tee at the same weight. The super-soft poly-cotton blend provides a comfortable, smooth exterior surface feel that wears well as both a standalone top and as a base layer under heavier garments. Generous body length extends coverage appropriately for a thermal that may be worn tucked or untucked. Made in USA.

This thermal is well-suited for retail and lifestyle brand programs in fall and winter season collections, layering programs for outdoor recreation and active wear, yoga and fitness wear lines that want warm-weather options, and any program seeking Made in USA women's thermal tops with fashion-appropriate styling rather than industrial workwear aesthetics.

Fabric: 5 oz., poly-cotton blend
Construction: Thermal knit (waffle/grid texture)
Fit: Generous body length
Sleeve: Long sleeve
Origin: Made in USA
Sizes: XS–2XL (verify current availability)
Brand: Bayside
Style No.: 3420