Outdoor gear in Malaysia can be expensive, but it's well worth it to be prepared for anything. The country has a tropical climate, so you'll need a range of gear to cover all possibilities.
If you're planning on hiking, be sure to bring sturdy shoes and a hat, as well as water and snacks. If you're going camping, make sure you have a tent, sleeping bag, and cooking supplies. And if you're just looking for a day hike, pack sunscreen, a hat, and a water bottle.
Whatever you do, be sure to research the area you're going to explore first as well and pack well!