POWERADD Travel Adapter Kit – Dual USB Ports + 2 US Outlets + 5 international adapters, UL listed, free shipping with Prime $12.99

There’s a promo code available for $10 that brings the price down to $12.99.
Promo code:
QRRXID4F
https://www.amazon.com/dp/B014SII7FO
It has a built-in micro USB cable. The USB ports are rated at 2.4A each. It’s also UL listed and of course, free shipping with Prime