Kalas Z3 Project 01 under-sleeves — made in Czechia. Our extensive wind tunnel testing suggests that Project 1.0 suits are our fastest kit. However, for those…
Kalas Z3 Project 01 under-sleeves, sold under the Kalas brand, is manufactured in Czechia. That origin is recorded at the "Brand-Stated" evidence grade.
Kalas is headquartered in Czech Republic; a brand's home country is not evidence of where its goods are made, and the two are tracked separately.
Origin evidence last reviewed 2026-10-24.
Every origin claim on Hesperia Market is graded by the strength of its evidence and linked to its sources.