Elders: you only need 1 suit (you only wear them to the temple and conferences) and lots of golf pants.
Get the best shoes and socks you can. You will walk so much in this mission!
Elders: More of a hiking shoe (like ECCOs) is ideal.
Sisters: Mary Jane Dr. Martens, Dansko, and Jambu are most recommended.
Blundstone boots are recommended for both Elders and Sisters.
Focus on layering in the winter. You’ll want long underwear or thermal garments, good sweaters, a warm jacket, gloves and a scarf.
Bring a sling bag.
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Most parents send their Elders with at least 1 suit (most countries in South America only wear suits to church and meetings) and around 8–10 golf pants. Families are sending more shirts because of heat and humidity — 12–14 is the average. Note for Sisters serving in Brazil: feminine hygiene products are expensive there and tampons are often considered taboo. Be prepared to send a good supply with your Sister Missionary.
Serve shirts have a ventilation panel in the side of the shirt making them noticeably more breathable. Missionaries serving in hot or humid places absolutely RAVE about this feature. The most popular shirt for hot-climate missions, for sure.