Mainly casual clothing is required and it is recommended that you limit your luggage to the basics. Bright colors and white are not advised while on safari.
Clothing should include a sun hat, golf-shirts, t-shirts and long-sleeved cotton shirts; shorts/skirts; long trousers/slacks; underwear and socks; good walking shoes; sandals; swimming costume; warm winter sweater; warm anorak and scarf / gloves for the cold winter months (May to September) and light rain gear for summer months (late November to April).
You also need to bring good quality sunglasses; camera equipment and plenty of digital storage; personal toiletries (basic amenities supplied by most establishments); malaria tablets; moisturizing cream & suntan lotion; insect repellent e.g. tabard; basic medical kit (aspirins, plasters, imodium, antiseptic cream and anti-histamine cream etc); visas, tickets, passports, money, etc.
Waterproof/dust-proof Ziploc bags for cameras and if you wear contact lenses, bring along a pair of glasses in case you get irritation from the dust or pollen.
Binoculars are highly recommended as well as a bird book – if you are keen.