(Reuters) - Lululemon Athletica Inc forecast first-quarter revenue above analysts’ estimates on Tuesday, as it expects sustained demand for leggings and sports bras from consumers looking for comfortable home-exercise apparel. The COVID-19 health crisis has pushed more people to exercise at home, creating a surge in demand for apparel from Lululemon and other athletic wear makers. However, the company warned that a resurgences in COVID-19, including new variants, could cause additional store closures, lead to lower consumer demand and disrupt its supply chain. Lululemon said it expects first-quarter revenue of $1.10 billion to $1.13 billion, compared with analysts’ average estimate of $999.5 million, according to IBES data from Refinitiv. Net revenue rose 24% to $1.73 billion in the fourth quarter, beating analysts’ estimates of $1.66 billion.