Revealing clothing: You’ll be passing through traditional villages in the Annapurna region, and it is important to dress respectfully. Wear appropriate clothes for hiking and avoid items that may be revealing or offensive. Keep your stomach covered.
Heavy materials: Keep your body and pack light by avoiding heavy materials. Ultralight down, micro-fleece, and merino are great materials that are very light but also keep you very warm. Leave leather, denim, and other stiff and heavy materials behind.
Uncomfortable/impractical footwear: Economize your footwear in Annapurna to avoid extra weight. Your hiking boots should be lightweight, waterproof, and durable. In addition to your hiking boots, you may pack one pair of lightweight slip-on shoes for evenings when you want to take a break from your boots. I recommend also buying warm yak-wool slippers in Kathmandu, Pokhara, or Chame. Any other footwear should be left behind to save room in your pack.
Clothing that doesn’t move well and wicks moisture: All of your hiking gear should move well and be moisture-wicking. This will keep you comfortable throughout your trek. Moisture-wicking clothing is particularly good because it can be re-worn, meaning that you only need to pack 3-4 shirts for the Circuit instead of changing every day.
Fashion: There’s really no need to be fashion-conscious in Annapurna. Instead, focus on wearing clothing that is practical, durable, athletic, respectful, and warm. Keep your more fashionable items stowed away in Kathmandu and Pokhara for when you return to urban life.