expandable strainer

Expandable strainers are commonly made from plastic or polypropylene (some listings specify 50% recycled polypropylene/rPP), stainless steel, and silicone.

Capacities vary by model. Examples from listings include 7-quart and 3.7-quart models and listings showing 64 oz and 109 oz capacities. Always check the product specifications for the exact volume of a specific model.

Many models use retractable or extendable arms to span the sink (one listing notes an adjustable range of 13.7" to 18.5"). Other over-the-sink designs rely on built-in feet or extendable supports so the strainer can sit inside the sink or rest on the counter.

The collapsible silicone listings specify heat resistance up to 230°F.

Drainage is handled via holes or mesh: some listings mention small holes at the bottom, others describe generously arranged holes or mesh designs. A few over-the-sink models also include soaking trays to separate rinsing and soaking.