Very good for charging mobile phones or small devices. I charge a mobile phone with a 5000mAh battery in two hours, using the USBa port and it has good sun.

Unfortunately, the output is 12v so I haven't even tried to charge the Laptop which needs 19v. Besides, I need to find a USBa charging cable for my HP Laptop.

The charger is incredibly efficient, but its volume is not small. You need to allocate a generous amount of space in your backpack to take it with you. Not that it's not worth it, but it's bulky. Unfortunately, smaller solar chargers don't even come close in performance. It's a small sacrifice you have to make.

A small detail I hadn't noticed before buying it is the fabric in dark blue color. It's like denim fabric. I thought it was black. A small detail, but it disappointed me...

Overall, amazing. And at the price I found it for 67€, I don't believe there is anything even close in comparison.

Update 06/07/24
I got a small tester with a screen that shows the Volt, Amber, Watt of the charging.

With clear sun without clouds, with the sun at 16:30 in the afternoon in the current time of July and with the sun being at an angle of about 35 degrees lower than its highest point (90°), it yielded 11 Watts of charging in the USB A port and changing the cables, 15 Watts from the USB C port. Quite good I would say, considering the conditions were not ideal (sun at 90° vertically).

I should add that the charging Watts did not change depending on the call I made to the solar collectors. I ended up having the collectors almost looking at the balcony of the opposite apartment building and the Watts remained steady at the above values.

I charge everything, from power banks, rechargeable lights, rechargeable batteries, to a Bluetooth speaker. It has really fast charging, even with a little sunlight. It has a USB-C port and a USB-A port where you can plug in any cable you want. The feet that keep it upright are a plus. Excellent. Of course, it is a prerequisite for our device to support fast charging, otherwise the solar charger will be painful and our device will continue to run on coal.

Clarifications:
a) I have purchased a three-meter fast charge cable so that I can put my devices in the shade. It wouldn't make sense to let them "cook" together with the charger.
b) After spring and summer, which experienced conditions ranging from rain to 40+ °C, its opening got slightly damaged (it still opens and closes normally) and a small bulge of about one centimeter appeared on one panel, which has remained the same for months. Both are aesthetic issues, as its performance has remained unchanged.

After a year of use, I can say that I have not regretted this purchase at all. On the contrary, I have enjoyed it, and it seems that it will continue to perform for a long time.