A foam bead comprising at least one of the following components: a block composite containing three polymer components: (ai) an ethylene-based polymer having an ethylene content from 10 mol% to less than 90 mol%, based on the total moles of polymerized monomer units in the ethylene-based polymer; (aii) an alpha-olefin-based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the alpha-olefin-based polymer; and (aiii) a block copolymer having an ethylene block and an alpha-olefin block; wherein the ethylene block contains more polymerized ethylene than the alpha-olefin block and wherein the ethylene block and the ethylene-based polymer of component (ai) have an absolute Tm differential of less than or equal to 5°C, and wherein the alpha-olefin block and the alpha-olefin-based polymer of component (aii) have an absolute Tm differential of less than or equal to 5°C; and/or a crystalline block composite containing three polymer components: (bi) a crystalline ethylene based polymer having an ethylene content of greater than, or equal to, 90 mol%, based on the total moles of polymerized monomer units in the crystalline ethylene-based polymer; (bii) a crystalline alpha-olefin based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the crystalline alpha-olefin-based polymer; and (biii) a block copolymer comprising a crystalline ethylene block and a crystalline alpha-olefin block; wherein the crystalline ethylene block and the crystalline ethylene-based polymer (bi) have an absolute Tm differential of less than or equal to 5°C, and wherein the crystalline alpha-olefin block and the crystalline alpha-olefin-based polymer (bii) have an absolute Tm differential of less than or equal to 5°C. a block composite containing three polymer components: (ai) an ethylene-based polymer having an ethylene content from 10 mol% to less than 90 mol%, based on the total moles of polymerized monomer units in the ethylene-based polymer; (aii) an alpha-olefin-based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the alpha-olefin-based polymer; and (aiii) a block copolymer having an ethylene block and an alpha-olefin block; wherein the ethylene block contains more polymerized ethylene than the alpha-olefin block and wherein the ethylene block and the ethylene-based polymer of component (ai) have an absolute Tm differential of less than or equal to 5°C, and wherein the alpha-olefin block and the alpha-olefin-based polymer of component (aii) have an absolute Tm differential of less than or equal to 5°C; and/or (ai) an ethylene-based polymer having an ethylene content from 10 mol% to less than 90 mol%, based on the total moles of polymerized monomer units in the ethylene-based polymer; (aii) an alpha-olefin-based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the alpha-olefin-based polymer; and (aiii) a block copolymer having an ethylene block and an alpha-olefin block; wherein the ethylene block contains more polymerized ethylene than the alpha-olefin block and wherein the ethylene block and the ethylene-based polymer of component (ai) have an absolute Tm differential of less than or equal to 5°C, and wherein the alpha-olefin block and the alpha-olefin-based polymer of component (aii) have an absolute Tm differential of less than or equal to 5°C; and/or a crystalline block composite containing three polymer components: (bi) a crystalline ethylene based polymer having an ethylene content of greater than, or equal to, 90 mol%, based on the total moles of polymerized monomer units in the crystalline ethylene-based polymer; (bii) a crystalline alpha-olefin based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the crystalline alpha-olefin-based polymer; and (biii) a block copolymer comprising a crystalline ethylene block and a crystalline alpha-olefin block; wherein the crystalline ethylene block and the crystalline ethylene-based polymer (bi) have an absolute Tm differential of less than or equal to 5°C, and wherein the crystalline alpha-olefin block and the crystalline alpha-olefin-based polymer (bii) have an absolute Tm differential of less than or equal to 5°C. (bi) a crystalline ethylene based polymer having an ethylene content of greater than, or equal to, 90 mol%, based on the total moles of polymerized monomer units in the crystalline ethylene-based polymer; (bii) a crystalline alpha-olefin based polymer having an alpha-olefin content of greater than 90 mol%, based on the total moles of polymerized monomer units in the crystalline alpha-olefin-based polymer; and (biii) a block copolymer comprising a crystalline ethylene block and a crystalline alpha-olefin block; wherein the crystalline ethylene block and the crystalline ethylene-based polymer (bi) have an absolute Tm differential of less than or equal to 5°C, and wherein the crystalline alpha-olefin block and the crystalline alpha-olefin-based polymer (bii) have an absolute Tm differential of less than or equal to 5°C.