Spring Notion Baby Boys' Black Classic Fit Tuxedo Set, No Tail Single breasted jacket with satin lapel, no tail tuxedo (100% polyester). This classic fit tuxedo is a more relax fit than our Modern Fit Tuxedo ( B017SKYK00 , B017SKY2VC ) Fully lined vest. Adjustable around the neck Bowtie. Baby size dress pants have elastic top. For size 2T to 4T, pants have flat front and elastic back. For size 5 and up, pants have zipper fly front with button closure and elastic back. Long sleeve dress shirt (65% Polyester 35% cotton ) For best fitting, please refer to size chart picture, under product pictures.