美国采购需求：气囊肩垫，自行车鞍座套，书包肩垫，书包肩垫，消散充气垫，座垫

I'm looking to source inflatable padded straps specifically designed for backpacks. These straps should offer both comfort and durability, ensuring they can withstand regular use while providing adequate support. Could you provide me with details regarding your available options, including materials, sizes, and any customization possibilities? Additionally, I'm interested in pricing and lead times for bulk orders. Looking forward to your response!