For the five days of Hajj, and travelling between Mina, Muzdalifa, `Arafat, back to Mina and Makkah, you will require a small to medium lightweight suitcase that is easy to carry. A backpack is ideal. Anything larger is going to be awkward for you to carry around.
However, before packing, let's look at what you will be wearing for the five days of Hajj.
Ihram is easy for a woman. You will need to set aside one full set of clothing that will be your ihram. Keep this on the side.
Into your suitcase will go:
A second full set of clothing (underwear, pants, `abaya (loose fitting dress), hijab, socks, and so on). The emphasis on Hajj is to forget about your physical appearance, so extra clothing is unnecessary.
A light-weight sweater or a shawl that can double as a blanket for the cool nights in Muzdalifa;
A small hand towel;
An extra pair of slippers/sandals;
Unscented lotion or Vaseline;
A small umbrella: a light-collared one will reflect rather than absorb light;
Tooth-brush, miswak and tooth-paste (although you can only use the latter after you come out of ihram);
Snacks, such as energy bars, dried fruit and nuts;
Refillable water bottles;
A spray bottle is indispensable for making wudu’ when getting to the taps is difficult in the crowd;
Hajj manual, a small copy of the Qur’an and books with du`aa’, and so on.
Check with your travel agent if they will be providing meals and blankets, otherwise you may need to take a sleeping bag/blankets and disposable plates;
An old sheet; which many sisters have found useful as a cover as well as for dividing a tent and creating a barrier from men should the need arise;
Essential medication and a small first-aid kit containing Band-Aids, painkillers, and so on;
Toiletries such as deodorant for when you come out of ihram.
May Allah SWT accept your Hajj, give the best of rewards and make it easy for you. Ameen!