The Kalasag is a large rectangular shield
A shield is a type of personal armor, meant to intercept attacks, either by stopping projectiles such as arrows or redirecting a hit from a sword, mace or battle axe to the side of the shield-bearer....

 used by the natives in the Philippines
The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. The shield is made of hardwood and is decorated with elaborate carvings. The wood comes from native trees such as the dapdap, polay and sablang. It was widely used throughout the archipelago for warfare. Datu Lapu-Lapu
Lapu-Lapu was the ruler of Mactan, an island in the Visayas, Philippines, who is known as the first native of the archipelago to have resisted the Spanish colonization...

 was reported to have used this shield during the Battle of Mactan
Battle of Mactan
The Battle of Mactan was fought in the Philippines on April 27, 1521. The warriors of Lapu-Lapu, a native chieftain of Mactan Island, defeated Spanish forces under the command of Ferdinand Magellan, who was killed in the battle.- Background :...

 in 1521.

The shield is measured about 1.5 metres. Its base is composed of rattan
Rattan is the name for the roughly 600 species of palms in the tribe Calameae, native to tropical regions of Africa, Asia and Australasia.- Structure :...

 wood which is strengthened by the application of resin
Resin in the most specific use of the term is a hydrocarbon secretion of many plants, particularly coniferous trees. Resins are valued for their chemical properties and associated uses, such as the production of varnishes, adhesives, and food glazing agents; as an important source of raw materials...

. Its shape is commonly used as part of the official seal of the Philippine National Police
Philippine National Police
The Philippine National Police is the national police force of the Republic of the Philippines. It is both a national and a local police force in that it does provides all law enforcement services throughout the Philippines...

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