Spring Notion Baby Boys' Modern Fit Tuxedo Set, No Tail Single breasted jacket, slightly tapered at the waist. Fully lined. 100% Polyester White pleated tuxedo shirt with wing tip collar and removable black studs(buttons). 65% polyester 35% cotton Baby size pants has elastic top Fully lined vest has adjustable straps at back. Adjustable around the neck bowtie with buckle at back for easy closure. For best fitting, please refer to size chart picture, after product pictures.