Amazon has launched a new, mobile-only shopping service called “ Amazon Haul ,” which touts low-cost items of $20 or less. Some consumer experts are seeing it as a new way to counter the two sites – Temu is a Chinese-owned site based in the U.S. while Shein was founded in China but is based in Singapore.

Temu and Shein often get criticism over the environmental impact of the ultra-fast fashion business model the two companies follow. They have also faced scrutiny from lawmakers and regulators in the U.