What are the quietest manual hand pumps available in the market?

Elvie Curve is a discreet, wearable manual breast pump with a curved in-bra design, one-press natural suction, and a comfort control valve. Its 120 ml capacity, lightweight 0.2 kg construction, dishwasher-safe parts, and hands-free design suit breastfeeding parents who want portable let-down collection or occasional milk expression.

The Lola&Lykke Manual Breast Pump is a quiet, hand-operated pump with two adjustable suction levels and four flange-size options. It pumps directly into a 200 ml bottle or storage bag, making it well suited to occasional expressing, travel, beginners and use as a backup.

The SM-3S is a compact, manually operated mini pump designed for backup use and low-flow laboratory applications. It offers eight pressure ratios, stainless steel liquid-end construction, low-maintenance operation, and a supplied muffler/silencer.

The SM-3A Hand Pump Mini is a compact, manually operated pump intended for backup use and low-volume laboratory applications. It has an aluminum liquid end, eight pressure ratios, a maximum output pressure of 25900 PSI, and a muffler/silencer for quieter operation.

The Haakaa 150ml Silicone Breast Pump is a compact, one-piece manual pump that uses continuous natural suction and requires no cords, batteries, or assembly. Its suction base helps prevent spills, making it suitable for breastfeeding parents who want a portable pump for collecting letdown or expressing milk quietly.