In recent years, waist trainers have gained popularity as a way to achieve a slimmer waistline and enhance the hourglass figure. These garments, also known as đai nịt bụng in Vietnamese, are designed to compress the midsection and provide support to the abdominal muscles. While waist trainers have been used for centuries in various cultures, they have become increasingly popular in Western countries due to the influence of celebrities and social media influencers.