Below is an excerpt from their website

Why Bras?

"In the Solomon Islands it is quite difficult to access a comfortable bra. Some of the second hand shops sell bras but mostly women have to buy their bras from the Chinese Trade Stores. These bras have some problems; they come in smaller sizes, are made of nylon and perish quickly in tropical conditions. You cannot buy maternity bras or mastectomy bras in country. For the women to be given free bras is an unbelievable experience for all of them. Women feel a tremendous obligation to meet the needs of their families, and so for any woman in the village to spend money buying a bra for herself can almost be seen as an unforgivable sin. The priority for women's spending is food and education needs of children."
 - Rose Wale, 2012, Report of Bra Distribution, Solomon Islands.

The situation described above is common in many countries. Women appreciate the common dignity of a bra for business or social occasions. Bras control breast swing when women bend to garden or cook at ground level. In humid climates rashes, fungal infections and abscesses occur between the breast and the chest wall. Bras help by allowing air circulation. Nursing mums everywhere leak, and bras allow the dignity of a dry shirt, and the comfort of support. A thrush rash on a mother's skin may spread to her baby's mouth, and then back into the breast itself. A mastectomy bra offers privacy about the problem.

Since 2005, Uplift, with assistance from Intimo and Rotary Australia World Community Service, has sent 600,000 bras wherever women have requested them. Uplift tries to ensure they get to the women who need them without compromising their dignity. We have sent bras to Fiji, PNG, Vanuatu, Cook Islands, Tonga, Solomon Islands, Philippines, Bali, Cambodia, Sri Lanka and the Northern Territory and the Kimberley.

Uplift sends bras only where they are requested. We supply to import duty exempt organisations for distribution and fitting. We ship only in biodegradable packaging, and aim not to compete with local businesses.