A fantastic, photo-rich review of the [GR Echo](http://goruck.go2cloud.org/aff_c?offer_id=16&aff_id=1574&source=tt_echo_review&url=http%3A%2F%2Fwww.goruck.com%2Fgr-echo-black-%2Fp%2FGEAR-000064%3Futm_content%3D{offer_name}%26utm_campaign%3D{affiliate_id}{affiliate_name}) by Álvaro Serrano:
> The GR Echo is the smallest of GORUCK’s Original Rucks. While the GR2 is perfect for multi-day adventures and the GR0/GR1 are all about versatility, the Echo is arguably the most specialized bag of them all. It’s the best daypack you can carry.