Monster Energy Ultra Peachy Keen is a zero sugar, zero calorie energy drink from Monster's Ultra range, launched in the UK in September 2023 by Coca-Cola Europacific Partners (CCEP). It had already proven itself in the US market before arriving in the UK, where it launched as the number 3 SKU in the Ultra line-up stateside. The 500ml can features a soft, light peach colourway with the signature Monster claw logo, a distinctly delicate and summery design compared to Monster's typically aggressive aesthetic. The can's look pays homage to what Monster describe as the "Summer of Love" — carefree, warm-weather energy. Available in the UK as a single 500ml plain can and a 4-can multipack. Part of Monster's seven-strong Ultra range alongside Ultra White, Ultra Fiesta, Ultra Gold, Ultra Rosa, Ultra Watermelon, Ultra Paradise and Ultra Black. Cost £1.65 (UK)