Branded Peter Millar Cottage Blue White Perth Mini Stripe Stretch Peter Millar Hair Of The Dog Performance Boxer Brief: Cottage Blue Peter Millar Nebraska Palmer Pink Gingham Stretch Jersey Boxer Peter Millar Performance Boxer "Nebraska" #4 Sir Shop Peter Millar Nevis Pima Cotton and Merino Wool Blend Quarter Zip Peter Millar Shirts Peter Millar Blue Gingham Poshmark. Our famously soft printed boxer silhouette in a fitted, athletic cut. These boxers are crafted in a unique polyester spandex blend and feature exceptional four way stretch for mobility and unmatched comfort.