Drytop

From KayakWiki

A jacket-type garment built to provide immersion protection and reduce the risk of hypothermia. Designed to be worn over a wetsuit or drybibs for complete body protection. They are made of waterproof material which keeps the paddler dry in the event of a capsize. A drytop alone provides almost no insulation, so you should wear an insulating layer such as fleece or polypro under the suit. With proper insulation a drytop over a wetsuit will provide more flexibility than a wetsuit, but not quite as watertight as a full drysuit. The best drytops are made out of GoreTex or similar waterproof breathable fabric so that they breath when you are paddling hard or wearing it in warm air temperatures.

Drytops differ from paddling jackets in that they have drysuit gaskets which fit tightly around your neck and wrists . Paddling jackets, or "semi-dry tops" typically have neoprene or darlexx gaskets which provide splash protection, but are not waterproof. Sunscreen, insect repellents, lotions, high heat and humidity, extreme dryness, and exhaust fumes from cars or gas appliances can destroy or shorten the life of gaskets.

Occasionally, the drysuit gaskets may be too tight. Latex gaskets are intended to fit snug; they will stretch a little with use. If they are too tight, gasket trimming can alleviate this. Stretching a gasket over a form creates microscopic tears, and can shorten the gasket's life.

Gaskets typically need replacement every season or every other season. Protect gaskets from UV degradation with UV protectant occasionally.