The 450GSM pearl weave jacket is woven to trap air between the ridges of the weave, which is what gives a pearl weave gi its lighter handling feel compared to gold or single weave despite similar durability. Pants are cut from ripstop cotton with a triple-reinforced knee panel, since the knees take the most abrasion during guard passing and takedowns.
This is the gi spec most academies default to for their standard student and competition line — light enough for no-gi crossover training but dense enough to survive daily grappling. Startup apparel brands typically order this as their flagship gi before expanding into a lighter summer-weight option.
Cold wash and air dry are strongly recommended for pearl weave cotton; hot drying is the single biggest cause of shrinkage complaints we see from gyms reordering after a first batch.