Regular rise Our best selling Guyfront trunk has got it all – style, comfort and quality. This everyday basic features a soft elastic waistband and is side seam free with a functional fly, providing all-day comfort. Made from soft cotton stretch, this trunk is available in a range of colours. The Guyfront Trunk is the most popular men’s underwear at Bonds. It is made of comfortable cotton stretch fabric and has a classic trunk style. It has a soft elastic waistband and is side seam free with a functional fly. It has a regular rise and is available in a range of colors.