Common portability features include collapsible/folding bodies, folding or movable handles, included ropes or hiking hooks for hanging, and very light weight—for example, one metal cup is noted as weighing only 72.2 grams with the lid.
Metal foldable cups are described for hot or cold beverages and can also serve as a small boiling pot or heating container; a tight-fitting lid is noted to work well on wood stoves or grills.
Foldable and portable cups are made from silicone, titanium, and stainless steel; some designs also include plastic parts or recycled plastic in lids or bases.
Some collapsible silicone cups list wide temperature resistances—examples include ranges from −140°F to 482°F and from −104°F to 428°F. Separate vacuum‑insulated steel tumblers are described as keeping drinks cold for hours.
Lid styles include flip‑top or flip‑straw spouts, drink‑thru lids, and simple silicone or plastic covers. Some insulated tumblers and cups are labeled leakproof or described with watertight flip‑straw designs.
Some cups list family‑friendly features such as BPA‑ or BPS‑free materials, anti‑scald rings, break‑resistant or lead‑free construction, leakproof lids, and vacuum insulation to help keep drinks cold safely.
Collapsed heights vary by design but examples show they fold very flat—around 0.47 inches, about 0.71 inches, or roughly 1.0 inch depending on the model.
