Types of ultralight climbing helmets Hard shell helmet This durable traditional lid uses a super-hard shell, usually ABS plastic, with a strap suspension system and thin foam lining. This type of helmet has two main advantages: low price and long service life.

​Actives used for both in-can and dry film preservation have various favorable and unfavorable attributes. Although unfavorable attributes can be reduced by co-formulating with other actives, there is still a need for innovation to arrive at the ideal solution within the bounds of current and future legislation. The novel in-can blend presented in the current paper is capable of offering superior