Mainline Menswear Holiday Essentials stocks everything you could possibly need for your summer holiday. If you’re going abroad or staying in the UK, there’s a style for you. Our holiday essentials stock shorts, swimming shorts, underwear in various styles including briefs, trunks and boxers. We also sell sunglasses, vests, t shirts, caps, hats, bags, towels and flip flops. So you can find everything and anything you need for your dream holiday.