Why we drew the line at two pounds
When we started sketching the Summit 2P, we had one hard number: a trail weight under one kilogram for a true two-person shelter. Plenty of tents get there by shrinking the floor until two people are sleeping on top of each other. We weren't willing to do that.
The floor stayed at 88 by 50 inches, which fits two 25-inch pads side by side. That meant the weight had to come from somewhere else: fabric choice, pole structure, and ruthless editing of features. Trekking-pole support saved the most, about ten ounces compared to a dedicated pole set.
15-denier sil-nylon on the fly was the next decision. It is lighter than 20D and, with a quality silicone coating on both sides, holds up well to UV and abrasion. The floor stayed at 20D because floors take the most punishment.
What we cut: interior pockets beyond two small ones, a gear loft, a second guyline per corner, and the vestibule zipper pulls that nobody uses. What we kept: two doors, because climbing over your tentmate at 2 a.m. is not a weight savings anyone wants.