1 rivet missing, see last picture. The "Advanced Bivy" refers to the Outdoor Research Advanced Bivy, a popular, lightweight, single-person shelter for backpackers, known for its durable, waterproof-breathable Gore-Tex fabric, dual-pole system creating overhead space, and versatile venting for comfort in various conditions, acting as a minimal tent alternative for minimalist adventures. This video provides a detailed review of the Outdoor Research Advanced Bivy: Key Features & Benefits: Weather Protection: Made with Gore-Tex Respiration Positive fabric, offering waterproof, windproof, and breathable shelter. Headroom: A two-pole system creates an awning and dome shape, preventing claustrophobia and allowing space for gear or changing clothes. Ventilation: Features zippered vents and a removable no-see-um mesh panel for airflow and bug protection. Lightweight & Compact: Ideal for ultralight backpackers seeking a minimal shelter. Pad Straps: Internal straps secure your sleeping pad to prevent it from sliding. This video demonstrates how to set up the Outdoor Research Advanced Bivy: Who it's for: Solo backpackers, peak baggers, and thru-hikers. Those wanting more protection than a simple bag but less bulk than a tent. Considerations: It's still a bivy, so it's snug; claustrophobic individuals might prefer a one-person tent. Requires practice to use effectively and manage condensation.