Final answer:
A 1. wireless bra, soft cup bra, and sports bra do not contain wires and provide support and comfort using other fabric and structural elements, unlike many push-up bras that typically have wires.
Step-by-step explanation:
The type of bra that does not have wires is known as a wireless bra. This category also includes soft cup bras and sports bras, which are designed to provide support without the use of underwires. These bras use various fabric and structural elements to offer comfort and support. A push-up bra, on the other hand, often contains wires to lift and shape the breasts, although there are also wire-free versions available.
Wireless bras are popular because they offer a comfortable alternative to traditional underwire bras, making them a favorable choice for everyday wear and during times when comfort is paramount, such as while relaxing at home or sleeping. Soft cup bras are similarly designed without underwires but may not provide as much support as a sports bra, which is engineered to minimize breast movement during physical activities.