Lenovo ThinkPad X260 Intel Core i7 6th Gen 8GB RAM 500GB HDD Laptop (EX-UK) 

Thinkpad X260 (20F6006TUS) Laptop (Core i7 6th Gen/16 GB/500 GB/Windows 7) is a good choice that you can go for.
Furthermore, the Lenovo Thinkpad X260 (20F6006TUS) Laptop (Core i7 6th Gen/16 GB/500 GB/Windows 7) is housed with a high-quality Li-Ion that does not heat up or swell.

Hence, you can easily carry this lightweight and compact laptop in your backpack while you are going out somewhere.

You can purchase this Lenovo Thinkpad X260 (20F6006TUS) Laptop (Core i7 6th Gen/16 GB/500 GB/Windows 7)