TriStitch Uniforms with IronClad Finish -- All You Ever Wanted in a Uniform! 3-needle felling stitch on all seams for maximum strength and durability. Bleach resistant dye. Color-coded size labels. Heavy-duty thread. Reinforcing bar tacks. Pull-on style, elastic waist-band, and hemmed bottoms. No pockets. The elastic can hold up in temperatures of 260° for 4 hours. Please allow eight to ten weeks for delivery of custom sizes.